Hey I've been thinking about this for a while since there are similar systems in other games. The basic premise is that you craft a random resource, and are able to break it down into a weaker variant either apply it to a new item or assemble it with others.
How that would work out with the UV system could be one of many options.
One option is that if one has a gun with a crafted UV (say a Shadow Driver with UV Medium versus Fiends) they could destroy the item (or disassemble it for some parts) and receive a weaker version of the UV to put onto another gun. Or possibly another item. A negative by product of this is that people would just craft Haze Bombs for UVs and apply them Leviathans, so it would have to be implemented very carefully to prevent that.
A second option is to strip UVs off of items to combine them somehow. So that two low UVs could equal a new low UV of a different strain. Or two medium UVs could equal a new medium UV of a different strain. Etc.
To address the idea of UV transfers, I'd suggest it be something that requires a rare monster/treasure drop to transfer UV's. Maybe even crowns & ce cost too, up to OOO.
My point is, I would say no to infinitely repeatable transfers, which is why I suggest it require a rare item to accomplish this task.