Firstly regarding the forum.
There needs to be a question and answer thread for the forum, I don't think people know enough about the forum to just stroll in and make a post yet.
Next regarding VGA.
A Q/A thread speicifcally for that.
An information thread listing all you need to know about the game. (Incorperates Q/A thread answers if applicable to information.)
A comprehensive list of incorperated games/series. Main characters, character groups, worlds, etc.
Remove some of the games/series, I suggest some of the brawl related ones. Keep them for later. Create the game with only some of the games/series and will all the protagonists, call it version 0.1 or 1.0 or 1st generation or VGA Beginnings or something.
Once the first one is created and the game has a small following, build the second one, fairly identicle to the first but with changes relevant to what you've learned. Add more of the series/games and add more unique characters or a unique world. Call it V0.2 or V2 or 2nd generation of VGA Core or something.
Make a third one, make it similar with upgraded changes, add more of the games/series, more unique characters. If you haven't added a unique world now is the time for one, if you have then create another one to diversify the game away from the other franchises. Call it V0.3 or V3 or 3rd generation or VGA odyssey.
The more you stray from the franchises, the more your game will be classified as yor game rather then just a clone.
For version 1/0.1/whatever. Make a short demo once you have the first level or so finished, this can be a video or even a game demo for others to play.