Is SillyTavern the most underrated frontend? Could it be an interface with potential trapped in a silly name? Or is it just for a niche?

I think it's really bad to use, currently. Conceptually good, but it's so far buried in unusable UI/UX that it's one of those projects where a dev needs to go offline with it for a year or two to come back with a fully re-written version because it went so far in the wrong direction and built ontop of it. I didn't look at the code though; maybe it has a good foundation and the UI is fully abstracted away. I tried it again last night on a whim actually, pulled its latest release and now learned that like, 80% of the settings are grayed out because they never did anything before because they only impacted TextGeneration not ChatCompletions. Which, maybe someone knws better, but this is like relics ago stuff. To think that UI let me waste any time in the past in those menus on options that did nothing is kind of mind blowing. All in all, I'm kind of surprised that's the best there is for RP still(?). Because I think regardless of its good intentions, it just gets in the way and if one had the time, they would always get far better results just managing the calls and context themselves.