I think I am the one that started the other thread OP mentioned.
Anyway, would love to see a 4.4" and 5.062" spacing Hunter stock...they could even get fancy and make an insert that reverses 180 degrees or another insert that swaps out that allows 4.4" and 4.27" to cover the short and target actions. Then all of the Savage actions are covered except the PTA's 3.something or other action screw spacing...
As far as the issue with top vs. bottom bolt release they could make just one model each for LA and SA and place mold lines in the finished stock that the end user simply dremels or files out for their particular application...incidentally I have never seen a SA stock set up for TOP release that wouldnt work for a BOTTOM release with no more than 2 minutes worth of "fixing" some just drop in and work no problems at all....