Pets are direct responsability of their masters. A good smn will 1) choose the best egi for each fight; 2) place his pet correctly and 3) sustain it when needed. Keeping your pet alive is the same as dodging visible AoEs on the ground, Egi's an extension of its master and the master has to manage it, period. As a SCH, I have better things to do than healing an Egi...like outdpsing 90% of the dps jobs I find in DF, for example.
Having said that, I can agree on a slight buff to sustain, even though I've neved felt the need for it, even in A2S when my fairy occasionaly gets hit by the Doll's ranged aoe.
