I've always wanted spells that summon one specific individual creature, sort of like how you could summon Haskil in the shivering isles expansion. These creatures would be named and would level up and grow stronger through battle. They might be unique creatures, or an unusual variation of a standard creature. Maybe you could summon souls that you've trapped in a soul gem, or perhaps there would be spells that summon a powerfull entity handed down from guildmaster to guildmaster. I believe this addition would make summoning a more interesting and personal experience. But what do all of you think?

No stick with the old summons, but make it so their stats are more variable when crafting them

I agree. Timed summons only make sense (to me) if the caster's magicka is constantly drained. Plus as an ex WoW player (warlock), I like having summons that stick around with me.

your system is way too complicated, but I would like things like the ghost of Rufio

A spell that let you turn a trapped soul into a one time summon hmmmm spirt dragon summon anyone?? That sound great IMO.

I do like the idea of a summoned entity leveling up with you the more you would use it, thats cool.

Sustained summons are a must, for all...
And some unique summons could be neat, which would be a named summon that levels.
But that should be in addition to the classic generic summons.