First - the main problem with most of the enhancements today is that unlike the previous system this one splits clearly class based features between prestige classes. That's unlike before; I mean it's one thing to be forced to come up with a prestige class capstone in the case of classes that only had 1 partial prestige class (like Arti) but I can't for the life of me understand how iconic class features gets split between prestige classes that forces a player to invest valuable points in features they seldom, rarely or will never use.
That's also the main reason why several classes right now are so fundamentally flawed that you're consider releasing a change to them in upcoming future updates. Like for the Sorc.
And that clearly shows the fundamental problem with the current enhancement system.
1. The idea to spend so much in a particular tree is silly. It leads to corn holing features and makes it hard to add flexibility. Especially since you've made the mistake of splitting class features among prestige classes.
2. By splitting class features between prestige classes and adding restrictive features like points spent in tree you make it near impossible to re-create current builds in the new enhancement system.
3. This leads for most part to narrow restricted builds compared to the more open system we have now.
So what's wrong with splitting class features among prestige classes other then causing players to waste points and spent so much in a tree?
First and foremost it leads to a silly a minimalistic approach to enhancement building constraint by only having so much space in a tree. This further leads to the abhorrent situation of removing key class features and severely limit build opportunities. Like removing the force line from the sorc class and restrict their ability to picking spell power from 2 different spell powers as suppose to any. And by baking in crit chance and spell power together with crit multipliers it limits the game in scope where it gets increasingly hard to have a full fletched out magic system with multiple build ideas.
With fewer more corn holed choices you automatically get cookie cutter builds. Restricted to few build options and with identical expenditure of class features.
Take Arti and sorc as an example.
Arti is limited to crit chance for force, electric and fire. All baked into one. And spell power level dependent on rune arm charge. That is so foreign from how it used to be. By baking these things together it removes the opportunity for a Arti to get the full benefit from all type of rune arms. Like cold and acid. And because it's increasingly hard for Arti's to break reflex save in upper end content few if any use AOE based rune arms (like fire and electric) and rely on acid and force.
And since there are very few items (other then scepters) that reliably increase force crit chance other then greater arcane lore items that is now further reduced by the reduction in lore. Where most superior lore items now provide 5% crit chance greater arcane lore is reduced to 2%.
So not only is force based runearms reduced in scope when it comes to crit chance (like a human arti with shadowmail with impulse) but they have no help from acid since they can't boost the crit chance of acid.
Now this used to be your average atypical class feature. Not prestige feature. But since the enhancement change is making this brutal break into battle engineer that gets all type of crossbow and runearm related stuff but the actual crit chance is split into the arcanotech - well as you can see you now have an arbitrary split of core class features into 2 prestige classes. And where as the atypical capstone of arti the ability to treat all clickies as level 20 is now the arcanotech one and the battle engineer gets something else, you have also force split what felt as classic Arti features into 2 diverging prestige classes.
And you can say the same about other classes as well. Such as fighter. Such as Sorc.
If you want to be a Tank then you will have a hard time finding ways of improving DPS since Stalwart takes a deep dive into sword and board. And if you liked the additional DPS from the old fighter capstone (10% doublestrike) you can only get that from Kensei.
If you're a sorc you cannot any longer pick from any spell power. You have to pick a main one that automatically comes with another. No more picking anything you'd like. And no force.
Take Paladin - can anyone think of any reason why iconic features like smite and lay on hands is split between 2 diverging prestige classes? That just sounds silly.
So the only reasonable system would be to have a core class tree, prestige trees and race tree. With very few things that require spent in tree.
The core class tree would include things that is fundamental to any particular class. Like the ability for an arti to boost any type of spell power and crit chance. Like core weapon and rune arm features.
Like sorc being able to pick from any spell power. Like fundamental basic Paladin core classic features.
Then each prestige tree adds the layer that makes those prestige classes unique.
While that adds more trees it also fixes the disconnect we all feel with the arbitrary split between what we always thought was core features and what was prestige classes. And it adds flexibility of choice. A Paladin can take their smite and lay on hands free from making useless investments and then enhance those features if there's a unique twist to being a specific prestige class.
Sorc can pick any type of spell power, then invest in the Savant that suits them and thereby strengthening that specific element and weakening the opposing. This adds flexibility.
By expanding choice but still maintain the structure of tree it simplifies the overview but provide a broader spectrum of choices. No corn holing; no restricting of features and no arbitrary need to split or limit core abilities.