1. summoned creature has time limit. I hate time limits. I want my thing to stick around forever until they get killed.
2. 1 creature at a time? might make sense for very strong summonlings, but what's the point of summoning just one rat? at least we need a pack of it.
3. enemy's summonlings are way too strong. and they like to summon atronachs all the time. I'm sick of it