sky fortress project making all the classes viable for it

well for sure scout,soldier,demo and sniper are perfect but i dont want only those.
sure sniper will be overpowered but how can i make him not me?
i tried putting some fences arround but it would look ugly and out of place if i add a great amount of fences.
what else can i do?
also one guy suggested to put some jump pads thats a great idea and i have some already to the map because of him.
have any more suggestions? so i can make the classes more useful?
and finally how can i make it be more fun to play with lets say heavy?
jump pads are great as i said for all the classes and will make a difference for sure.

also if you don't know what sky fortress is well it's a project some random guys are working on.
imagine fighting to floating islands and trying kill the enemies.
in the future will be a sfm short showcasing the update.
the map i am working on will get published at least when i have the aplha finished and tested so i can be 100% sure its everything alright for the detail and the release.
in case you want to participate thats great we always need some help just let me know by sending me a message.

(some pictures are a bit old i mean that the pics where taken 1-2 weeks ago)

yea but how can i make a cloudtop? will it be nice or you know.
also i tried different textures it isnt the best thing to have but keep in mind i will use those to some islands not for everyone just not to make them look hmmm out of place i could say maybe.
thanks for you suggestion i will keep it in mind

well you are right i will use some like that with my own style.
but isnt the upward textures a good option?
i believe that would look very nice.
and also when i am talking for floating islands would it be a good idea to have something like a kinda broken 2fort base for red?
not exacly broken you can imagine what i mean i am sure.