Here's my main critique: in its current form, Swashbuckler offers no unique benefit that would make me seriously consider Bard levels in situations where I wasn't already going to take Bard levels
It should extend on the Bard feel, not support Fighter-wannabees who also sing songs
There are a lot of abilities that seem interesting until you step back and realize that you will still be on a bard. That means a lot of utility and CC, but not a lot of damage and not much mitigation.
Giving a bunch of minor combat bonuses is nowhere near the combat bonuses you get as another class (not to mention the difference feats make). Basically, a swashbuckler would be jumping through more hoops (stance/gear requirements, limited multiclassing, etc) in order to be a slightly less terrible character when not doing the main bard stuff (imho i.e. buffing, CCing, and other support-type functions).
This is the same problem with Warchanter--take lots of minor benefits that add up to the Warchanter still being a terrible DPS character who can also sing songs.
I don't get the whole crit profile thing
This seems to be a big focus of the Swashbuckler kit. I get that we're manipulating the crit profiles, but why? I can't choose weapons that are going to crit particularly hard. If I'm going heavy bard, I can't afford feats to back it up like Overwhelming Crit.
Maybe there's some powerful synergy I'm not thinking of. Paladin/Monk could be interesting but alignment restrictions preclude any synergies there. There's nothing from the core Bard class that synergizes here. There's level draining I guess, but that's better with TWF.
I don't know... crit mechanics are different than they used to be. Some newer effects only work on 19/20s or vorpals, the new ruby eye augments could have been crit-based but they weren't, you don't see mods like bodyfeeder around any more, hold monster + crit is not as good as it was. Crit builds are currently for greataxes and such--not rapiers.
If we're really going down this road, at least give me the option to include Dwarven Axes, Longswords, Bastard Swords, Khopeshes, or something like that.
My proposed focus for Swashbuckler: combat ebb and flow
Make it to where a Swashbuckler Bard is a good DPS option for a while and then they hop back to support/CC. That way I might see a Bard hit my LFM and think "cool!" instead of "hmmm... I guess we can afford some deadweight..."
The doublestrike/doubleshot action boost is a good step towards this. What about exploring options for synergies with abilities like 'Exploit Weaknesses' or 'Sword Dance'. Consider how 'Advancing Blows' from LD encourages a melee fighter to charge into the next group of enemies without pausing to heal to full and how that matches the overall feel of the Dreadnought destiny kit. Make the abilities all tie in with what it means to be a Swashbuckler.
Sooooo, here are some interesting mechanics that might serve this proposed ebb-and-flow theme:
- High-stacking, very temporary buffs gained from avoiding damage for a while
- Things like the "First Strike" feat (but not as terrible) or the recent changes to Quivering Palm
- If we're going with crit profile, add some synergy like stacking sonic spellpower or Enchantment DCs on crit
- Active abilities that give big combat bonuses for a short time on long cooldown. The Bard can reduce the cooldowns by dodging attacks, getting crits, or performing supporting actions like singing a bard song
- Unique bard song effects (doublestrike song? max dodge bonus song? convert a bard song use to an extra action boost (up to once a minute, on demand)?)