yeah champ melee cav certainly could use an hp reduction. The consular bodyguards get even more armor than champion spearcav when compared to their citizen soldier counterparts, so some armor adjustment might also be necessary to be honest.
One thing that should be mentioned about spearcav is they do less damage than infantry spearmen (much less for champ spearcav and about the same for citizen soldiers). It's as if their attack repeat time was increased from 1.0 sec to 1.25 sec without the appropriate damage adjustment.
I think 0.26.4 is the last iteration of the community mod before the a27 feature freeze, but these are certainly items I will work on for the community mod during a27, assuming one will be maintained.
I am planning on:
Melee champ cav nerf (armor + hp), maybe a tiny bit more for consular bodyguards.
Spearcav damage buff (to correct the aformentioned inconsistency)
Broad melee damage increase, armor decrease (help resolve meatshield meta)
Han ministers 1 pop, higher percentage effectiveness.
warship classes: light warship(could become a scout ship via upgrade), medium warship, heavy/siege warship, transport ship, and special ship (fireship + future additions to this class).
separate need to garrison boats from boat effectiveness.
might even try to give boats unit AI instead building AI so that they are controlled like units rather than siege towers.
Revised unit specific upgrades.