I think eye-candy and game-play are about equally important, because a level is an interactive piece of art. Also, what I consider good game-play is whatever I find fun to play.

I don't want to list favorite designers for MP, since they are rather close in my mind, and I don't see a need to rank them. I'm not listing SP level-makers either; my current favorite at this moment is EvilMike.

I'm glad URJazz was brought up, since I remember he was very knowledgeable with triggers and jcs in general. I also remember he had me test some of his concepts, including a working bank system for a hotel he made. His monopoly level astounded me at the time, because of how he used triggers. There are a few other things he showed me that haven't been duplicated today (I'm quite surprised), and he explicitly told me to never tell anyone about them, and I won't. So there are some interesting things that most people don't know about, and it's best you guys try to figure them out on your own.

I'm surprised Spotty and/or Black Ninja hasn't been mentioned, since the whole foo race concept was big, and in my opinion it was quite genius how it all turned out. The team foo race series is, in my opinion, the highlight.

The ? may seem like an odd choice, but he made this really crazy level called Bunnies vs Golfers, and it was uploaded to J2C, and it is one of the only levels I remember from the J2C days. To this day I still appreciate the creativity behind the concept. The tile-set was made by Lesmash. After checking it out in J2C archives, the level is still mildly amusing in my opinion.

Waz's tile-sets are interesting for some reason. So yeah, there are probably more appealing tile-sets, but I think Waz makes versatile sets that also look cool.

Snooze makes seemingly innumerable amounts of very creative and inspiring levels (whether finished or not) in a relatively short period of time, most of them are MP. He is also capable of making decent looking tile-sets. He definitely has been a motivation for me to continue playing jj2.