Feedback on TTK, TTD, and Auto Health Regen

My take on it is, the TTK is fast because we now have super fast auto health regen without the need for a med kit or bandages.  If we had slower TTK With the quick auto heals you'd would have soooo many situations where you get an enemy down to 5 health, only for them to pop behind cover or round a corner and by the time you have caught up with them they are waiting for you with full or near full health, which is rubbish gameplay. Same with longer range engagements or if you have someone holed up in a building etc, where with no auto heals you could attrit their health so they will eventually be killed or they dare not show themselves in 'fear' of getting killed, or if they were a medic, they wouldn't haven't the firepower they now have with non class locked weapons., but with auto fast heals it's a lot harder to attrit a player. It's also why I feel they have designed the maps as they are, where for an attack and defend game, it's nigh on impossible for even a squad to defend an objective or building because nearly every objective or building has half a dozen entrances and exits that you just can't cover, and that's before destruction. In my opinion, full auto health regen is a very bad mechanic. Personally I'd have no auto health regen, though the half way house of battlefield 5, where it was tiered (like the vehicles) was ok.  That and class free primary weapons are in my opinion a major reason why gameplay in BF6 is sorely lacking and one dimensional.