Well no, not really ! As primarily a traditional modeller, Cinema already does nearly everything I want it to (some notable exceptions remain, but most have adequate workarounds and I am quite patient), and continues to look better while it's doing it with every version ! Broadly speaking, they fixed modelling around R18, Nodal Materials arrived, Volume building got integrated, they fixed UVs more recently, Fields got introduced (which was fundamentally massive for me) and I have never hated Physical Render as much as everyone else seems to ! My renders in that don't take all night, and with a little optimisation and attention to settings I still get pretty reasonable times out of it, so am not even massively unhappy there !
I also quite like the tech preview approach because it means we can all hit the ground running when it's fully implemented, and see what the future has in store, which, for me at least is GENUINELY promising because it is a serious leap forward in terms of things I care about like procedural, and stack-based modelling and the idea of a single integrated nodal approach, as long as it doesn't happen at the expense of traditional modelling tools, which I hope always remain and are not neglected in the longer term.
So whilst yes, I understand the frustration that people feel about lack of big new exciting things in every version, I find my happiness with the program relies on that sort of thing less and less all the time it remains a supremely comfortable and familiar place to work. It's the little things that make me smile every day.
CBR