I haven't played YINSH, but I haven played some of the other games in that "series". You're aware of the others, right? Which is your favorite (YINSH I assume)?
Only played YINSH, and only a few games. It's nice and I would be eager to play more, but unsure if I would study it deeply myself even if it did become popular. A lot of abstracts tend to blend together in my head as "combinatorial slugfests," where the player with the most RAM in their brain wins out. (YINSH may or may not be like that, don't take my word for it.) It's the primary reason I switched from chess to go, where my propensity to make tactical blunders can at least be offset by larger scale planning and good directional judgement.
Not the OP, but I liked ZERTZ. It's very symmetric, almost, but not quite, an "impartial game" in mathematical terms (where you don't have to know whose move it is to know if they have a winning position). You can set up the most outrageous combinations, going from nothing to having won with a series of forced moves.