Honestly this is something else I’ve been thinking about when it comes to BB that I think is one of the many factors that leads to it feeling as bad as it does for most, build variety.
On a class touted and even reworked for allowing as much build variety as possible, BB just says ‘no’ to that pretty much off rip. If you want it to be a useful part of your kit that isn’t just ‘alright I cleared everything in front of me with Inferno time to deal with the few stragglers at range’ (or the same but Trauma staff), You HAVE to go down and grab Psykinetic’s Aura (I mean you want it on that side 99 times out of 100 anyway but still), and you HAVE to put 3 points into Empowering Psionics bar minimum, AND you HAVE to use your combat ability before hand or else you feel like you’re wasting your time.
Smite has a similar issue, but it can at least function off of one point in Empowered Psionics, and can work with any of the combat abilities and doesn’t have you sitting here going ‘dang, I need to wait for my CA or else my blitz just doesn’t work’. Assail is even more freeing, working off of Warp Splitting alone (and not even NEEDING that though feeling a lot better with it) and allowing you to freely choose whatever you want for keystone and CA based entirely around what you want your build’s focus to be.
Meanwhile BB as a ‘fully in slot kit item’ is Empowered Psionics or bust, otherwise you just equip it for Kineitic Flayer and Psykinetic’s Aura access before then making the build you want, but realizing your blitz is just there to kill snipers and gunners in a pinch.
This isn’t the worst thing in the world, but it doesn’t feel great compared to what the other two provide, and is often simply carried by the staff’s it’s paired with (Inferno or Trauma), just dumpstering everything within seeing distance so the fact it only kills like 2-3 things an engagement doesn’t matter.
Every build I’ve tried to use that has had it as a ‘key part of the kit’ has felt like cheeks though. For you’re caught between ‘ohh, I should use Warp Siphon to get my CA off cooldown more often’ but then going ‘oh wait, but I need EP to make the ability feel good/actually deal with the big stuff I want it to…heck’ and then your build just kinda flunders not being great at CA spam but also focusing SUPER heavily on ultra maxing an ability that at most will help you like 10% of the time during the mission.
At least with EP on Smite or Assail, I am dealing with the ENTIRE wave and a few specials on top of it, making the keystone selection feel entirely worth while and enjoyable to utilize. With EP on BB, I sit there with max charges for basically the whole mission, try and use them on the waves where it matters, and more often than not utterly atomize a poxwalkers face in the way or watch my team STILL get the kills before my ramped up cast time anyway, resulting in Psykinetic’s Aura never procing and making me unable to get to my CA as fast as I need to to use BB again.
It’s just caught in this loop of not feeling great compared to any other specialized set up, And that combined with it’s hard to use nature makes it feel bad at base outside of using it for pure utility (which I mean is the point but still), but also feel bad ‘fully speced in’ as you can’t deal with targets through waves without stopping and starting multiple times, and every other class does what you do but better.