If you're using TSM as a price source, you can already use a different string for these two things.

I generally prefer using TSM as a source, for the less spiky material value string I can use (and the restock expression is great). But since crafted qualities do not currently work with TSM I have to use auctionator if I want to see which quality actually brings what profit.

I would love to be able to use TSM for material value and Auctionator for crafted items, to circumvent both issues as much as possible!

you should be able to actually do this already by using the auctionator price source within a tsm expression