Neoshin Reborn
I don't think the last 2 chakra armor affects are fair, I mean it's cool to abosorb chakra but from a long distance, thats the only thing that sounds kinda iffy to me, but it's only my opinion
Anyways, you have to be creative.
For example: Damain's armor, the one that allows him to not feel pain causes him to fight ruthlessly.
But it also has a bunch of downsides (As Demonstated by about 2 pairs of bad guys called Zero's in a manga I read.) See, first off, pain is proof that your alive, in summary. Because pain is an intensified touch, so without it, you lose pretty much all feeling, but can still move, and react.
How this would be used: First off, try something to freeze your opponent to death without him knowing it. By using a justu to cause it to snow, your opponent with the armor would unknowling not know the temperature, which then his body would react by causing him to pass out.
Second, if you were to cause a wound that was continously bleeding, the opponent would realize if if it wasn't a part on their body they couldn't see like their back, so they would bleed to death.