It is important to note that Arm has the full support of Microsoft, which is crucial for Arm’s success in PCs
Not saying windows compatibility isn’t extremely important, but based on Windows on Arm’s track record, collaboration with Microsoft on this project specifically seems like more of a millstone than a windfall.
Moving some packages (especially libraries) onto an unstable branch while keeping others back on a stable one. It probably won’t fuck you immediately, but when it does it’ll be a bastard to diagnose because you will have forgotten what you did.