Alter self should be there as well, as Dandu said. Especially if you are outsider (Neraph, Aasimar...) or Dragon. Comes much earlier than Polymorph, but takes up a precious 2nd lvl spell slot which should primarily used for wraithstrikes.
I would also add Expeditious retreat (speed boost) which is nice for lvl 1 spells, nerveskitter is also nice. Benign transposition (although pallies gain Knight moves) isnt bad. Grease is fun if your party has 5 ranks in balance. Phantom steed really shines if you dont have your pally mount. Sleet storm is great battlefield control, as are stinking cloud and black tentacles. Fiershield is nice but you wanna get hit with that one. On the other hand, blur or displacement make sure you are not hit a lot. Invisibility can be fun too. Shadow conjuration is great. Vampiric touch is nice addition since you will be close and personal to enemies (although it might be anti-pally fluff). Enlarge person is awesome for gishy types. Keen edge is awesome.
Battle blessing is by no means broken IMO. Even combined with SotAO. And, any DM can vote SotAO spells either divine or arcane. Either way, you gain some good stuff. In 1st case, no ASF on wiz spells in armor AND battle blessing works on them. In second, you can qualify for some PrCs that have "cast the x lvl arcane spells" requirement. Abjurant champion comes to mind, but there are others.