Personally I never do retopology and UV mapping because you can get great result with decimation and Smart UVs project for static game assets, like you can see in this demo: https://youtu.be/-Fy7g3g6uCI For the texel density a new auto-packing algorithm is in preparation in the Blender source code, for now it's an addon:…
Thanks for asking SnowinChina. I've gotten pretty good at unwrapping, I think, so no problems there. I tend to come around with these questions about workflow and what is acceptable, from time to time... mainly because I've been self-teaching and I'm concerned about building bad habits. Right now I'm trying to fill out an…