If they keep their health they need asi reduction medium or damage reduction medium, theyre just way to strong for a defensive class that has 40 bars of health. Good guardians can literally kill anybody without even using their shield just because of their gross health + asi + no damage reduction.
Recons with increase cap rate and even greater increased stealth cap rate would make games much more strategic and make spawn camping much less viable. It would create a much more strategy rather than spammy meta-game.
@Chris
Giving recons increased cap rates isn't a bad idea actually. It certainly would help a team swing for a win late in the game.
As for guardians, I don't really think they need an asi decrease. The asi needs to go, no doubt about it, but in its place they get a low damage increase or no buffs at all aside from health.