It seems like an interesting idea. Though why can't users be at once different roles for creating content - this is firstly.
And then price - it's kinda strange. Ucoz system charges 3$. But they have a huge system and 3$ for all users of site.
And here you must produce loads of content tso to be in profit.
At least charging for resources.
At large idea is quite interesting - such extra comfort and non-wordpress panel - not bad.