I've commented this many times, but I definitely want to see more isometric grid games like SC3k, RC2 or TTD.
They were less-realistic, yes, but is so pleasant how everything ties together and you can neatly fill out the whole map.
Meanwhile, while I like Cities Skylines or Planet Zoo, it is always incredibly awkward to build roads and paths to the point where I find it frustrating.
Isometric sims make it easy to build something that looks good. CS & PZ can make things look incredible, but it's a PITA to get there.
it's so frustrating in Cities Skylines without mods, that it's so common difference in height causing so much placement issues