LOL, yeah i can imagine. Is there alot of the old faces from here playing LoL. If it meant getting back into some good MP with familiar face, i might have another try..
About DG: I think the first thing you should do is to contact pacov asap, so he can fix you up with lots of games with most of the remaining old players, as well as being able to get on vent with them.
I think he had a relevant thread somewhere....
Do you mind looking it up? If not, then just PM him. I am sure he is gonna welcome you back into the game.
Now, if you want to play with AUS people, then forget it. There might be 1 or 2 aussies left, but most of them are goners.
Yep, PM pacov. Thats the first thing I would do if I were you 
Banned for Demigod-mania.
Oh and, to answer to your question, some people from DG play LoL, like Orcun, NinkiCZ, ZenGod, Mithrandar, etc, so yeah you can get in game with a few of them, but you cant expect 5v5 arranged matches with them, cause they are usually soloing. I mean, I have played a lot of games with Orcun and Ninki, but usually its just me and 1 other DG veteran. I have never seen Ninki and Orcun play together, even though I have played with each one of them. Just an example.
Anyway, if you dont like LoL, then dont play it
Just saying.
Btw, I was really disgusted by its graphics at first too, but then I got used to it, and now I really love the game.
"My Pokemans. Let me show you them"