After reading through your post I feel like you need to do one thing, it's crucial.
Develop your balance...with a balance ball, walking a couple 2x4's nailed together laying on edge, sitting on a large ball, squats and compression jumping...
Here's why, you're not into park style and want to free ride, but you are leaning away from the CRC profile that really suits all mountain free riding and carving.
I feel like a CRC profile lends itself nicely to carving and linking turns, and steep hard pack corners, it sounds like you don't like how the board transitions and that feeling usually stems from a balance standpoint, but everyone's different and you really may just prefer a different profile board, however no board shape, profile type or construction method will give you better balance and that's the key, balance and strength to to maintain balance
On that note, take a peek at the C3 BTX construction found on Mervin boards, you might like