GUID support in DM?

I see support in Aurelius now for GUID, UUID, and so on, but not in DM. Will this be coming?

What exact feature do you want to be added?

Ideally, standard logic types in the drop-down list for the supported forms of GUID and UUID. And the creation in the script of generators for these, as needed. But perhaps this is where things become troublesome? I have no idea whether this could be done for all the supported DB engines. My focus is on Firebird.

The alternative would seem to be that I define a domain, and put the generator on the application side.