Back in the day when TW99 first came out, one of the online game modes was a "shoot-out". The idea was for 4 players to enter and each hole one player gets eliminated by either number of strokes, or if strokes were equal, there was a tie-breaker , one shot closest to the pin. Each round one player was reduced this way so on hole three, the two remaining players would play it out for the win.
I think this would be a very popular game option, especially as a challenge mode for a small number of credits to win? It would be a very quick but entertaining game and if it was technically possible in 1999,- I would assume, not a big deal to implement in 2017.
WGT would be able to make some fast money as players would only play a maximum of 3 holes (unless they would increase the maximum players allowed to 5 or 6? and therefore play more games in a short period of time. Charge a percentage of the purse or a flat fee like in skins games and I am sure people don't mind ...
Just a thought ...