I think the we + a solid somehow connected short word dot com domains may be quite valuable but the second word must really be a good one. Some of those other we____.com domains you mention include just such a valuable keyword.
The applications for “tune” as a verb just aren’t so internet related I don’t think which is why people in this thread are putting your name down.
I mean who’s going to buy it? A shop that tunes pianos guitars or some other musical instrument? Or as someone else alluded something to do with music but even then not really the sale of music? Think about what the word tune means when preceded by we - it makes the word a verb. (It’s not a noun like iTunes.) So, what applications are there for tuning on the web? If you think hard there might be some (such as a site to optimize websites and forums) but I think some of these become a stretch and even if they fit - of limited application.
Anyway you just have to hope that the right buyer comes along which is what we all await with any domain. But I see it more like a square peg trying to fit into the high end circle of we + keyword dot coms.