I would not call a -2 overstable. I thought it was a 0 for the turn. Sorry I stand corrected.
I consider any disc that is a -1 to a +1 a stable to overstable disc. With that in mind just looking at Innova's line up they offer 47 discs that fit into this stability range. 16 drivers 12 fairway drivers and 19 mid range discs. As for the understable -2 and less there are 25 discs offered. 14 drivers and only 4 fairway drivers and 7 mid range discs. Now I think if one looks at fairway offering with only 4 understable vs 12 stable to overstable discs. This fairway slot is for the slower arm speeds. This is a good speed for these player types recreational, newer players, women, teens and younger and also the older players say age 40 and above. What I see is a very limited disc offering for the average recreational disc golfer. And its not just Innova I see it with the other manufacturers. Most discs are marked for that late teenage to 25 year old male demographic. The market is reflected in disc offerings from the manufacturers. If the manufacturers knew it was going to be a hard sell they would not make it. The manufacturers seem to think we are all pro level players or something.