I think there's a handful of adults that support it, but because it was a kid-oriented line it always needed heavy kid support and had it for a while. But the show has declined in quality itself, I am pretty sure it's had steady ratings declines since it began, and I think at this point it's setting itself up for wrapping up at some point. It has to... It was stuck in a period of a fairly tight timeline. If they had taken other EU into account they'd have even more of a confined space to work in.
But what the line lived off of was kids, and kids didn't support obscurity as much as they supported the dreaded Clone repaint and Ani/Obi.
Citing that Ahsoka or Fox is like me citing Revan and Malak... They sold well, but were probably the shortest run of figures in the 30AC... There's always rare stuff, in any line. Especially in a line's waning days.

Also, don't know that there's any point to making action figures... LFL wanted them to look as they do on the show, but at the onset, Hasbro wanted to, and pushed for, doing realistic versions.
Initial 2D Tartakovsky CW figures were done realistic... They were fairly well received too, depending on the figure, and the later Tartakovsky figures were fantastic... The animated Tartakovsky figures, not so well as I recall.
I think the line's been realistic style since day 1... I think Hasbro needed that cohesion, and while I think they tried to blend the two by releasing "Legends" figuers that were realistic and tied to Clone Wars (Super Battledroid, etc.) at the line's launch, I think Hasbro knew the difference separated adult collectors for sure, and COULD separate kids... I think people underestimate how observant kids are about things like that.
They took literally decades of a line though, and basically segregated a new line from the old line... I think that separation hurt Clone Wars out of the gate, and you throw in a show that its curtain is dropping, and I think that's just a recipe for this outcome ultimately.
I think Hasbro really hoped collectors would support Clone Wars as much as they did the regular line, but I just think there were too few, and then the kid audience started to drift away too.
I'll never argue they're leaving a lot of cool characters on the table, but they could easily bring them out in the realistic line... It's lost traction in the last 4 or 5 years too though, so I imagine there will be a little less risk with figure decisions this year. Or more main-character-heavy assortments with the obscurity representing a lower portion... As much as I want Adm. Trench too (I think I'd take him either style), I just don't know if he'll ever happen, much less animated looking at this point.
For the realistic fans, I think Ahsoka was a good figure... I just wish we had a young Ahsoka with a Rotta The Hutt to go with the older one. Mine's quite nice, and other than my first one having 2 left feet, I don't know many realistic fans who felt she was a bad figure. Same with Kenobi, and Anakin is outstanding... one of the best Anakin's, if not THE best Anakin, ever made IMO.
I don't want a lot of that stuff left on the table either... and who knows, the line isn't dead yet, but the further they get from the show, and I think the show is on the way out sooner rather than later, the less likely a Trench figure is, or whatnot. I prefer things to be done realistically, but I think a lot of that stuff is fading fast in either format at this point.