Well, to be technically correct, I wouldn't say the new 2.1 doesn't "allow" it. I'm sure the 2.1 is ready for doing the same (or more) if a proper *.ini is introduced. It is just that the old theme.ini is not working in the new 2.1, and that users like us haven't figured out on our own yet how to modify it to work in the 2.1.

Hopefully the developer of the software will make a new *.ini file available so we can have some more fun again ;-)