Perhaps the very wrong target audience, because I do actually play ladder, but I do have a gripe.
It feels like I meet the same four people all the time. Unless someone specifically queues against me, I tend to have four matches versus the same dude in a day.
1v1 are also highly taxing and require a lot more focus and attention span than many other game modes because you are responsible for everything, there's no ally to bail you out if you screw up. Everything is on your shoulders.
Personally I would enjoy seeing more mapgens purely because it can be frustrating to play on a mappool set that my brain just goes "nope" on, but I feel as if the inverse is also true, where mapgen can screw with a persons "how to play game" thought process.