I've played these maps numerous times and I've asked myself;"Are these maps Competitively Viable?".
The answer is: I don't know. That's why I thought It'd be a "good" idea to get some other player's thoughts & opinions on these 2 maps. So yeah. It'd be good to hear from other fellow human-being about this topic.
Btw,I know that Great Heights is a W.I.P but,It's pretty well-tuned & tweaked in it's current state.
Cloudtop: https://tf2maps.net/threads/cloudtop.25179/
Great_Heights: http://gamebanana.com/maps/73905