Alright, so a few years ago, my oldest son was deeply interested in Yu-G-Oh!, and would frequently wrap me into playing. Recently, I was digging through some boxes (because even after four years we're still not completely unpacked) and I found my old deck.
Then I had an idea: what if there were a class in WoW whose mechanics revolved around the idea of summoning? You summon a number of smaller creatures, and you can sacrifice some or all of them to summon a larger creature, etc. Each summon provides the summoner with a number of abilities he otherwise wouldn't be able to use, and in the case of more powerful summons, useful group-wide buffs.
I would imagine that such a class would use mana as a resource that is used to summon your weakest monsters and to fuel your latent and summon-based attacks and abilities. The summons themselves could work as a resource as well as you need to sacrifice a certain number of lesser monsters in order to summon larger ones. There could be three or more "tiers" of summons as well, e.g. lesser, major, and prime.
I don't know if such a class would be feasible within WoW. It's in essence a pet class on steroids - which would be difficult to balance - and it would be a nightmare trying to make it lore friendly. Either way, I'd play it.
How would you guys handle a summoning class?