I actually think most pokemon designs are quite good and pretty far ahead of most other monster collector games especially considering the sheer amount of pokemon. I like a lot of pokemon from each gen, however I do prefer the design philosophy of some gens more than others such as gens 1, 2, 4, 6, 7 and 9.

I think James Turner is a weird freak who kept trying to put fetish mons in pokemon though and I'm glad he's gone. Gen 8 dex kind of gives me the ick compared to the rest even if theres still a few mons i like.