deetrI don't think I've met anybody who dislikes process because of the map, the only reason people dislike process is that it's overplayed (of course now that I post this somebody is going to say they hate the map but what can you do)
i personally hate the mid a lot, but that's just me.
as for stuff i've seen about the map, it tends to favor the flank a lot. (for example, choke is fairly unspammable, leading to a lot of no-damage choke holds, while the flank gets to do damage in IT/Sewer). i've also noticed it's very hard to avoid wiping after you lose a couple players in a push, due to how open every part of the map is. this means combo players might find it boring/unfun
people say its the roamer map because of the jumps, but keep in mind that there's no other map with more props/slopes for scouts to abuse.
this is all probably just me being bad though