I don't have exact numbers but in my experience, nobody ever plays sitngos, even tho they reward 2 packs (50pts) for 40pts in total.
However, these 10 points are less for most people (aparently) to play this:
What do you think about this:
Additional to these packs you get here and instead of the 5 points for play-for-prize you get so called "reward-packs".
These packs have a 25% chance to reward a rare on the last packslot and if it's a rare, also a 25% chance that it's an ultra rare.
For Sit'N'gos you get additionally to the 2 packs (or 1 pack) 3 "reward-packs" or 5 "reward-packs".
Second and 3rd placements also get some packs (maybe 2 and 1?).
So everyone gets a reward.
For playforprize you get 3 "reward-packs" for a victory and 1 for loss.

How do the devs and other players feel about this?

Never have I seen someone waiting at a Sit and Go. I would love it if there were incentified a bit more. Something has to happen to make them more worth it. Schlumpfi's idea sounds fine to me.

Sounds too complicated to me. Maybe pay out the points to the winners, like 40 points paid, 1st get 25, 2nd 12, so devs get like 8% of the points but 2 players make a benefit.
Or jsut wait until more players play. There are still too few imo.
Other games easily have thousands of active players - not sure why bdex hasn't.