Buy 99 throwing knives (or arrows if you're using a bow regularly) and never worry about mosquitoes again, they are a pain in the ass depending on your weapon choice.
Yeah, but I've never used them because of the covenant requirement. Usually don't even have any Heal attuned in favor of all offensive miracles. If I did more co-op, I'd probably give those a go.
Miracles>Pyromancies>Sorceries for me. Hoping DS2's fixes to Sorcery targeting will be an improvement.
The Princess Guard miracles are pretty useless considering their faith requirements and IIRC the higher one takes 2 attunement slots as well. The gradual heal one is really slow just like the Sanctus. I did a 'white knight' type character a while back and they weren't worth using. Disappointing.
Greater Heal is good though, I really only use the heal miracles as a phantom, and equip regular heal even if I'm not doing a faith build just so I can heal, a lot of people who summon don't realise they heal you with their Estus, so I like to have that back up heal option always.
I am nerdishly excited about the changes to magic targeting in DS2, I think it's gonna be awesome!