The reason new engines are unpopular is because I Wanna games are about precision, which comes from dedicated practice with already existing physics engines. The benefit to universality in the engines (and subsequently physics) used is that a wide range of fangames become accessible owing to the fact that one can carry muscle memory from one one to another. For the most part, people are unwilling to relearn how to play in a different physics engine as it can take a long time.
While it's certainly an impressive feat to create a new engine, and in a language few IWBTG projects have been attempted in, I'm not really sold on the idea that it's innovative. Certainly what you do with it has the potential to be innovative, but just coding an engine in another language isn't especially innovative if you're just getting yourself to essentially the same baseline as other engines. The method may be different but the result will be relatively the same until new things are added.
I question how exactly your new engine is 'limitless' and while I don't necessarily doubt it, I'd be curious to hear/see an example or two of gimmicks you've created that borderline cannot be created on Game Maker. You've nothing to fear about people stealing them if they are truly close to impossible to replicate in Game Maker as this is a community full of people who pretty much exclusively use Game Maker.
I'm interested and I do want to commend you for attempting something as grandiose as to create the next most popular I Wanna game and something that is more than just a fangame. But I'm not sure you've necessarily researched your audience - I doubt many here will be prepared to provide a portfolio as it is simply such a professional practice you are asking of what is essentially a forum of hobbyist teenagers (which I am not speaking ill of as I am one). That said, if I see more and am sufficiently convinced you are capable of doing things in your engine that would be impossible, or close to impossible, on my own in Game Maker (and that I think are interesting!), I may consider taking your offer up. If not, good luck!
lots of truth here guys
i don't doubt your coding potential and ideas, but if you lurk around "this side" of the community you'll see that the bar is, uh, not that low.
and innovative doesn't necessarily mean fun, so i guess that from a player point of view we'll only be impressed when you show us a playable demo for realzies.