Feat Ideas.. and I'm not nice enough (or coherent enough) to organize.
Of course +## spell power (insert type here) prefer increased crit chance as well or another option.
SLA: longer rage, mass heal, mass resist energy (whether hit 1 target with all resists, or group with 1 resist... either would be nice!) any 9th level spell, longer duration invis/incorperal (like shadow fade), True Rez,
+2 DC universal, or +4 to (insert type here)
Increase to damages always useful, tactical DC increases nice..
+ %% Amp (both positive and repair)
Some sort of better summons or increase to summons.. I think someone said like 'grand summoning' before...
Some E-Completionist ideas: by themselves or mixture of...
+5 stacking stat increase (so +7 with heroic completionist)
+100 hp and +100 sp (fvs/sorc would be 200)
+10 to all skills