There is much less of a risk when it comes down to adapting a canonical adaption. Less time it takes adjusting a canonical setting, or basing something off it than it is to make an entirely different continuity. When you see something you're familiar with take I don't know Rurouni Kenshin you know what to expect from that. When you see an entirely different rp with just inspirations from Kenshin you expect the gm to know how things have gotten to that point, and have a spring of knowledge when it comes to how, and why things are as they are, and as they work in that universe. Can samurai use magic in this universe? Do they use guns instead of swords? Is the setting still the same? It requires a whole different level of commitment that I personally have no interest in seeing through as custom settings, while i have mulled some around in my head that wouldn't work in a roleplay setting, are not something I am willing to walk through with little to no guarantee of any continued interest, or actual backing from people. 

Regarding my previous statement I apologize. I didn't intend to come off as accusatory however i am well aware people think little of me for one reason, or another and I do find that trying my patience when it comes to roleplays as me being a more strict on characters finds me little welcome in some cliques on here.