We got the two Witchavens and Thief reboot, I guess all them could be considered Bad Old Games to some extent (though the Witchavens got some fixed versions so Not As Bad now). I don't exactly know to what extent the community wishlist played a role, but the two Witchavens had probably 2500+ votes combined (obviously multiple wishes), and Thief 2014 probably had 1200+ votes combined. Obviously wishes don't translate directly into sales, but GOG considered them financially worthwhile to bring so the wishlist probably helps in getting extra info on what is worth bringing.

Similar case seems to have been Arabian Knights - it got 2000+ wishlist votes thanks to AGDQ. I'm not sure it was financially worthwhile to bring but I'm kinda glad it did to complete the votes ;)

I'm sure initial deep discounts and low base prices help (maybe Thief's discount should be even greater though :P) Sleeping Dogs shot to the top of the Popular chart, but Thief reboot isn't too far behind.