Tucuru truly captures your progress as an author, doublezero. All your tracks up until now have been a delight: ficticious, but realistic enough that they could actually exist; manicured and professional, but neither manufactured nor sterile. Every one of them has had this feeling of "great big automotive playground" tucked away inside, but that feeling is front and centre with this one (and not just because of the kart and rallycross additions). Hell, even the out-of-bounds section has more care and attention paid to it than some tracks...
I can see KittX's point about making it feel more "lived in", but I feel that Tucuru is already leagues above so many other tracks in terms of driveability and atmosphere - and my potato PC is just happy that it's not as feature packed as Andara.
As for whether or not the kart and rally sections are worth working on... well, I had a lot of fun with RXA. The B version was a little too fiddly for my tastes. But I very much liked their length: some attempts at actual rallycross circuits posted here on RD are great, but they just serve to highlight that AC wasn't really meant for dirt. Tucuru's are a just a neat little bite-sized bonus. Thank you, but don't pull your hair out if you personally can't think of ways to improve on their current forms.