I'm not sure if this has been discussed since the change to pushback mechanics in WotLK so here goes. I'm a Holy Pally and I heal in both Pvp and raid situations where I want a guarantee that I get no or almost no spell pushback, especially in those dicey situations.
I'm specced right now in full Spiritual Focus and Imp. Concentration Aura, but I suspect that this puts the spell pushback below zero and is a waste of talent points. Where can we trim the fat and what would the implications be? I'm thinking about this from two angles: PvP (I want a 100% spell push back reduction, other talents be damned keeping my mage alive is foremost) and Raid healing where being close to 100% reduction is nice but what are the trade offs? Maybe when Duel-Specs hit I'll really be able to make a PvP and Pve talent distinction and put more points toward PvE talents in lieu of a few percentage points of spell pushback reduction.