Hi daniel and welcome :). If you want discuss about buildroot compilation, i recommand you to comming on irc channel. (That speak french a lot, but we can speak english to. Baddly but english ^^). And if you have idea of modifications, doesn't hesitate to contribute to github ! That is the idea of Open source project. Not only give you the work of others ;). You can also give help in the forum. If you have the compétense for try compilation (I do not have), may be you can help other one with the "stock" release of recalbox no ? :).