but +15hp each level above 21 will make the difference.
Raising HP can be blocked at any level.
Weapons skill% is not but accuracy. So uberhigh weaponskill means that you can drop your strength to 1 and move the points elsewhere. If everyone could raise their gunskill to 300, it would mean that pretty much all builds would take strength 1 or 2, unless they wanted stonewall. Weapon handling perk would lose its meaning.
There are already 1-2 ST chars, 1 CH chars, 1 LK chars, minmaxed chars. It's not game's fault, people will always look for the shortest way to achieve their goals.
Anyway removing level cap not gonna happen, it's way better to have thousands of alts with average ~200 players. Just imagine this horror: people would be self-sufficient, jack-of-all-trades, economy would be ruined, and interaction will suffer. Wait, don't we have that situation right now? :>