Hossin is honestly nice, it rewards logistics like Valks. It really doesn't allow big armor zergs to do much, and it forces lots of infantry fighting. Air isn't as much of an issue as normal due to all the tree cover but it still exists.

The bigger problem with Hossin is simply that most people don't want that. They want giant computer melting battles and Hossin is utter shit for those sorts of things. Beyond that Hossin is not that kind to vehicles in general aside from transports and lots of people basically live in vehicles to farm those KDA's they care about so much. Then you have the classic "Hossin lag" which I've never experienced personally but apparently exists for some.

On another note I used to like Hossin but player crafted bases ruined it for me. There are so many cracks in the mountains of Hossin that a single skyshield can cover and in doing so basically make unkillable bases that require multiple suicide vehicles to just in through the skyshield and for the infantry inside to hopefully survive the AI turrets to actually get anything done. Its such absolute bullshit to deal with a base that effectively 1-2 people can hold off entire platoons unless they are insanely organized and know the gimmicks to playing around "immortal" bases.