@buxtronix thanks for the effort! Why not make a PR? 433MHz is a quite unique value proposition of MySensors. I'd recommend a quick search through the open issues on MySensors github, maybe some CC1101 support was requested already. In any way, I'd encourage to raise a PR to the development branch. Who knows, if we get some people engaged, maybe we can release a new official version of MySensors with improved hardware support.
Thx, Dirk.