When I set out to make this forum, I tried browserside RSS+XSLT but I found too many dead-ends. Transforming RSS does not work in Opera at all, it outright ignores you. No browser vendors are interested in implementing XSLT2 and there has been even less engagement by vendors and developers over XSLT than even RSS (which is being ignored)
Android will never get XSLT. We're talking about an OS that took three years to add a play button to HTML5 video. An OS that still doesn't handle basic Unicode. Android is a complete unfinished mess which will continue to drag its feet for as long as possible.
I admire what you're doing--I truly wish web development wasn't so damn inelegant sometimes--but you're on the losing side. When Mozilla announce that no matter how loudly developers try to convince them otherwise, they will not listen to reason about RSS, we all have even less hope of convincing them to implement XSLT2 and make RSS better.