Okay so after experimenting for a bit, I found out that those sparkles you may see mark what the shaman is doing. It could be selecting an item or adding an anchor. However, it does not apply to ghosting objects. Hope this answers some questions.
All those items you see in custom maps that are not in the editor are hacked. They are the unused items of Transformice(go here for more info http://transformicewiki.com/index.php?title=Shaman_Item)
Sociology, those aren't determined at random, they're determined by milliseconds. People's times could be apart by like 0.053 seconds. So let's say two people are tied with 26.3s, but the person in first could have won by 0.095 seconds. Sorry if this is a bad explanation.
Sir Dusk, a lot of work would have to be done to make a cat that moves around eating mice. And it would seem a bit too....silly. And as for the water idea, a whole bunch of new physics would have to be made for being underwater. Plus, who wants to eat wet cheese?! Ew.
If you guys would look back at their twitter, you'd see that they are already planning on making a level editor. They're actually testing it this weekend.
Pink/red/super spirit(whatever you call it) was overpowering, and in a way broke the game. For example, some of you have played Platform Racing 2. What if everyone had a cowboy hat to use any time? It ruins the game and makes it too easy. Especially in this game where logic is involved. The logic is gone because of it.