But he is right. The proposed QoL changes are bad for reasons posted on the forums for years and time and time again users seem to have the same new but old ideas.
The stance mechanic tweak, if needed, should be made a class balance suggestion but doesn't belong in a QoL thread.
Your own SC respawn timer reduction is not good. You compare it with rvr respawn but this is a false comparison. In rvr respawn could be with no timer at all, it doesn't matter because it's an open zone.
At forts the respawn is fast too but you get wounds debuff.
SC are a totally different beast. Limited player numbers, so kills should matter. When players almost instantly respawn, it devaluates kills. E.g. small sc with short distance from respawn back to the fight.
Unless the enemy gets ressed, you want to be sure, that they don't come back too soon.