i think it'll make a huge difference. for one thing it would add more sharks. instead of one gnuff, there would be 5. 5 sze's, 5 timi's, etc. i don't think low-rated players would be playing more than one game at a time.
edit: actually, i guess since it's anonymous, they would just face each other. pay no mind.
you were right the shark:fish ratio would increase. When you join youre more likely to get a shark, same goes for a fish theyre more likely going to get a shark rather than another fish. The game will dry up quicker. There are positives too, you wont have to wait as long for a game.
I like the idea of listing the top winners. Not sure it will help, but it shouldnt hurt.
Edited 12/3/2014 20:23:10