Abrogate should be based on the most applicable power. You wouldn't, say, abrogate AMC if you're immune to magic (like a golem god or something, for argument's sake); just use the most applicable power.
I think Force Field is weak. 50 points is 25 points of power attack with a two-handed weapon, using just the basic version of that feat. All in all, it's not very much. I think this percieved problem might be solved if the field regenerated at a rate equal to your divine bonus. So, same example... someone (intermediate deity, divine bonus +12) taking the ability three times would have a 150 pt. force field that regenerated 36 pts./round.
Goetic Blood... my two cents on the 100+ damage question Howard put forward would be to increase the CR you could summon by +1, or add in additional Summon spells to get to 10 levels; so two SMVs or an SMIX and an SMI, for instance. I'd go with the former, myself, because eventually no number of SMIX will hinder an opponent capable of dealing that much damage in a single blow.
Also, UK, what do you think of an ability that allows all damage from iterative attacks to be summed before DR is applied?
eg. X hits Y five times, each hit dealing 40 points of damage. Y has DR 30/-. Normally, X would only deal 50 points but with this ability, X would take all those 40 pt. hits and add them (for 200) and then Y would apply DR once, taking 170.
Balanced? If so, what level of power? Divine? Cosmic? Trans?