This map was pretty fun to play. I like that even though you can go super fast on the ice, it's not an easy insta-cap. The faster you go on the ice, the more you're thrown up in the air on the ramp making you an easy target for somebody defending the cap point.
One thing you might consider changing is the height of the base trigger. I've found it's very easy to just jump clear over your platform with a normal strafejump and not score. Most maps have a taller trigger.
Visually, it would be nice to have the walls made of something other than solid wood, as that's kind of bland and doesn't really make sense.