Skills
- Proficiency is too small at +2 to +6
- Actually being good requires Expertise or a class feature bonus
I do not think that bonuses are too low, especially at high rolls, but skilled users need "protection" from low end results.
So, to steal from rogues;
when you are proficient in a skill/tool roll, treat any roll lower than 5 as 5.
with expertise, treat any roll lower than 10 as 10.
might as well delete CON as a stat. move it's saves to STR. STR needs utility boost.
give everyone +2 HP per level.
that is not the problem, it's how little is being called for. If you split it into 3 skills as in 3e you will get even less usage out of spending a skill proficiency on it.
- No core skill usages for less frequently useful skills like Medicine or History
same problem as above, and I agree, it needs more written usages in printed adventures and better examples and DCs in PHB.
Armor
- Few options
- Too narrow of a spread
- No "unrealistic" fantasy armors like ringmail or banded
- Missing real armors like Brigandine and Gambeson
armor needs to be simplified and remove disadvantage on Stealth and return fixed penalties.
getting penalties of -0 to -3 would be great for balance, also have every armor it's own max dex again.
Right now there is only 3 mundane armors that are worth having printed:
studded leather,
breastplate,
fullplate,
but if you have heavy armors that have:
+8 AC, Max DEX +0, penalty -3
+7 AC, Max DEX +1, penalty -2
+6 AC, Max DEX +2, penalty -1
+5 AC Max DEX +3, penalty -0
you could have 4 viable heavy armors for different kind of characters.
light armor could be:
+4 AC, Max DEX +3, penalty -1
+3 AC, Max DEX +4, penalty -0
+2 AC, Max DEX +5, penalty -0
+1 AC, Max DEX +6, penalty -0
delete medium armor