Yup. Built up a Ragley mmmBop frame (yet another Brant offering I believe) as a bit of a play bike experiment (well it was only a 100 quid for the frame.) Heavyish Flow wheelset and a big 160 Lyrik fork. It was rubbish and I hated it. Swapped the wheels for some lighter Crests, put a RS Rev fork on it at 130, changed the 710mm bars for some 680mm carbon bars, swapped the stem up from 50 to 70, 1x10 drivetrain, a smidge under 25lbs, and now it's a properly awesome trail bike! Beats me up a bit but it's fast and very involving. Put all the other stuff on a big bouncy bike where they should have been all along.
Quick edit... I did buy the above stuff with the intention of then getting a Soul. I think there was a stock issue so thought as I had the parts I'd stick it on the mmmBop whilst I waited for stock to come in. Was such a good ride I never did bother getting the Soul.
I guess if there's a lesson to be learnt it's that a frame may well suit one build more than another, and if you try and build it up to be something it's not then it may well be rubbish. OnOne do tend to sell bikes that cover a broad spectrum of setup, frames like the 456 for example, but that doesn't mean it'll be good for you at the extreme ends of that scale.