So your base assumption is that Visual C is the cause of instability problems? For which I've never experienced. Surely changing libraries would require a whole set of regression testing and checking across the window versions people have installed (i.e. win 7 and 10)?
It's good that you can get it recompiled, so clearly you can run the distro and capture the errors and then run your mingw version and then demonstrate why it should change?? This would then get the developers attention, would it not?
I'm still surprised the 'windows linked libraries' are going to make such a difference. The stability problems I assumed existed due to networking and connection issues (from what I've read till now).