They are currently moving in this direction.
Ogryn’s rework literally had them rework Bruiser to work like this (100% regen over 3s on elite kill instead of 4%) and it honestly works quite well to me. Maximum Firepower also works like this (they also reduced it’s regen to compensate for bruisers change, so both are 100% over 3-4s upon their triggers), and the only exception they have is Go Again! which is an upgrade specific to Taunt. Which, I’d argue makes sense since being able to ‘spam it’ isn’t as overly impactful since you have to choose between it and Valuable Distraction, so either you’re making targets die super fast OR constantly making sure they are hitting just you and not tinies, not both, and it can’t break the other two abilities since it isn’t an upgrade for them.
Arbite also follows this montra, the ONLY CDR they have is in a Keystone, Malocator, and it’s 50% regen. The only other one is a capped 5 seconds off Break the Line if you hit a bunch of things, which is a one ‘hit’ use on cast so it doesn’t feel too insane (though the rest of the Arbite is busted to heck and back but it’s not really CDR that’s doing that).
To that end, I do think they are pushing CDR in that direction, which I think is the right choice. Zealot is the ‘oldest’ class right now, so I feel like they are getting a ‘larger look’ in the background and likely to get all their changes happening ‘all at once’. Veteran as Well is the second oldest, but could very much use this on their Tactical Awareness for a vast variety of reasons, and I’m thinking something will happen with them ‘when their weapon comes out’ that’s totally happening…totally (could be wrong though/they don’t pull the trigger on it because they don’t want to make people not like the new weapon).
And Psyker’s Psykinetic Aura already has it’s ‘death flags’ showing. Bruiser got reduced from 5% to 4% a decent bit ago, then (after an unneeded temporary Talent reshuffle) Ogryn got their rework and got it changed to regen. Aura got it’s CDR hit the same way (5% down to 4%), which makes me assume this is the ‘hay, community, have fun with this for the next while, as we are going to be changing this too’. Could be wishful thinking, but it’s a ‘trend’, and would make sense to me. Then they’d just need a Zealot tree rework (likely the next on the docket) and to poke Tactical Awareness/‘help Veteran’, and most things will be shifted to regen.
So while yes, ‘complaining about it more is good’, ‘data suggests’ they are doing this/slowly fixing it behind the scenes. This is also just FS…so like, give it another two to three years and the CDR will likely all be ported over.