I managed to record 3 more swings (all of them DTL, because that's the only place I can setup my phone decently). Will have to ask someone to film from the other perspective as well in the near future, but I don't know too many people at the club just yet...
In this new video I tried to keep my right elbow a bit more tucked in, and tried to start my downswing a bit more from my lowerbody (if that makes any sense?)
Just see for yourself:
So, I still have the problem that I slice my ball, especially with long irons, hybrids and driver I'm having difficulties with not being able to produce a nice draw or straight shot.