I think some of the point is that any other character besides a monk has an option to wear heavier armor. It may cost them a feat and they may lose evasion, but their core abilities are still there. A caster could theoretically wear heavy plate and with the right buffs, could cast just fine. A monk loses nearly all his class abilities if he chooses to wear any armor. So much so that he might as well not be a monk anymore.
Now I'm not saying that monks should be allowed to wear armor, but monks do deserve more ways to equalize their disadvantages than being in earth stance all the time. A higher dodge bonus than 25% would have been a way to do this. As that is no longer seen as an option by the devs, then PRR options other than earth stance (not necessarily stacking with it) should be made available.