Lol its crazy that such a simple idea can make a great class.

the only thing I disagree with so far is the animal compnaion/ familiar idea. Instead I think the Shrine warrior should get some kind of sooped up self Buff they get at 2nd level that last for X ( like 2+CON modifier rounds) that is sort of liek a barbarians rage i guess , like +4 bonus to STR and CON and +2 to AC?

but that is just me thinking off teh top of my head.