Not all players have the luxury of playing for two hours straight.
The current duration of the Wealth Acquisition Potion is two hours.
Some players would benefit if the potion had a 30 minute duration.
Maps would get more of a rotation among players.
No one is forcing you to use all of the two hours. Just use your 30 minutes. No need to bring everyone down to your standards. And no, maps would not "get more of a rotation among players" because the people who use them properly would just stack them in their inventory before starting to grind/farm, so their "rotation" wouldn't be affected.