Sigg, are you sure it's a good way to add everything in RDX by default?
To be honest I don't like it
Maybe it looks cool first time but why to keep it for everyday use.
The same with mediapack, do you know that it is already quad times larger than all other addons put together? 160Mb from what i see and can bet i do not use even 5% of it.
Default WoWRDX was right move, something to learn on, to test new features and to show how people need to design things, but 100500 themes - you just overdo it.
Well, it's cool too, but better to make them optional imo
If you can make 2-3 remakes of popular UIs like XPerl or Pitbull and so on, what is popular nowadays i'm not sure - it will get more users if you need them.
And if you can make mediapack modular (some basic stuff and everything else optional) - can be great too.