What do I wish for DDO? (because this seems to be a "wünsch dir was" thread)
More content is of course always nice (more races, classes, quests etc.) but please quality over quantity so make the new content as good as we are used to it from you.

My currently biggest Issues with DDO "gameplay" are space problems and the need to deal with the TR cache.
So I would wish you completely remove the TR cache from the game because this is NOT need. A TR can work like an ER/LR!
Just leave us the bank and inventory space we got from favor and you dont have any need for such a TR cache!
And at the end, this might be also less work for you because you also had to deal with some big issues with this stupid and unneeded TR cache in the past.

Besides that, more space is always better!

In my opinion, you should also consider to completely drop the BTC property on items and make items either BTA or not bankable. I think it basically never needs to make an item BTC or nonbankable because you can completely avoid the need for such a property.
Basically the need for anything that inhibits free trading of items in a game is quite artificial and not really need if you do things "smart" enough.
But I think that at least BTA is maybe really need for DDO, but I wonder if I only think this because I'm used to it.
If we would not have a BTC, there is basically no need for a character bank and you can drop this old and also basically outdated system.
Then we could have only ONE BIG account bank!

And the next thing that also concerns the space and item handling problem.
one of my biggest wishes for DDO are items that scale with your level, this means you can equip such an item from level one to level 30 and it provides its power based on your current charater level (e.g. 2 strength at level one and 20 strength at level 30).
In my opinion, also an example of something we all are used to have in an MMO are the minimum level property of items.
But we are used to having something that is basically not needed and quite stupid if you think about it, but it is very hard to drop old habits.

And another thing is that I expect that you stop this stupid power creep, also this is something we are just used to have, even if it is stupid and even harmful for the game at the end!
Make item different and not stronger!

Therefore if you update the item rewards e.g. for Crystal Cove, you might consider to introduce items that scale with your level because they do this anyway, you just need like 5 inventory spaces for an item that should only use one space, with all the negative consequences for the player!
And don't make the new items too strong. Make them as strong as Ravenloft items not more and not less.
And if you keep this line you don't have to fear that you have to change this item again and again because of they were outdated by your own senseless power creeping item policy.
The reason why you are going to change this item now is foremost the power creep in the past but you should finally start to learn from the past.

And if you do class passes the same, be careful to not overdo it because this cause the need of class passes in the future only to solve balance problems caused by power creep too.