TL;DR - Scroll down and read bullet points on suggested rewards.
Rewards points don't hold a lot of weight once the outfit, plank sack, and Amy's saw have been obtained. I'm proposing two additional rewards that would provide unsustainable utility to players interacting with the Mahogany Homes (MH) minigame. A teleport book, and the item required to charge it.
These would be purchasable & untradeable rewards from the Mahogany Homes Reward Shop.
Teleport Book
-Teleport directly to the front door of current customer
-Only usable on the assigned contract
-Wieldable
-2 teleport cap per contract to prevent unintended utility outside of MH.
-Very low cost in reward shop 1-10 points, or freely given by Amy through dialogue after MH is unlocked.
Book Page
-Provides 1 charge to the book
-Cost 25-100points
-Separate from current supply crate
These added rewards give players the option to use their earned points to slightly decrease their total time spent training through MH.
For added perspective, after buying the outfit, saw, and plank sack, doing mostly adept contracts (teak planks, 4 points per contract) from level 74-95 I now have 7,240 points accumulated. This would equate to 72-289 teleports depending on the point cost of charges. Roughly 201k to 868k xp worth of teleports.