As a gamer, here is my opinion:
I'd pay for blocking the ads in the game
Ads? What ads? AdBlocker ftw.
I'd pay for advanced features
Yes, now we're talking. Advanced features might be access to dungeons, regions, shops, cosmetics (dances, character models, skins, advanced menus, etc.)
I'd pay for powerups
Pay to win? I would not even play such a game. People who have to pay to win are the worst, and games which support such behavior are even lower than that. Paying for cosmetics: ok, paying for powerups: not ok.
More game time
Depends on the game, but might be ok. Could be a turn-off for people who do not want to pay or do not have the money.