Lizard: yeah the fire spell is only useful in a mage like setup with points in pyro and geo.
Dwarf: I agree its an underwhelming disable since warfare has access to so many others and the rage + warlord build tends to obliterate everything before CC becomes a problem.
Human: I surmise you are saying decrease the AP cost of encourage down to 0 so non-support classes have an easier use, this is half-right. My reasoning being that sometimes you wish to spend at least 2 AP and allow enemies to close the gap having a full bar of ap next turn. Having it like a team heal/buff would Hurt builds making use of two attributes (think int + finesse from shadow blade) having a buff handy that increases these attributes makes these builds better.
ELF: yeah its been discussed on the forums that its op.
p.s. yeah i forgot the word to describe mixed builds