World of Empire -- looking for playtesters

So, you have a very massive system and a theory on roleplaying that supports it. Great.

What you need to understand is that the system is very much your system. It has grown and evolved in play and around play. I didn't read the mechanical parts, to be honest. I read your blurb on theory (some of which I agree with) and a bit of the system/setting homepage. And, at first sight, it seems to be a fantasy heartbreaker. Nothing wrong with that. I have several and enjoy the newest. But, they are almost impossible to explain to other people in all the glory. The reason is simple: it is your glory. Pretty much the only way of making your game popular is to play it with lots of people. And I doubt the success.

What you could do is find some place that makes it easy for players to find one another. Use it.
The other thing you could, and I heartily recommend doing it, is to go to RPG.net and post a link to that theory of yours. If people like it, find out if some of them live nearby. Recruit them.