I am prompted to discuss this topic because reasons.
What about having a feature in-game to pause it, such that microtransactions become unavailable. Then, if the user requests to disable the feature, the lock expires after five weeks.
Aside from removing any advertising of the feature, and any purchasability of it, it disables skins visible in the game. That disabling feature was mentioned some time ago as a way for people to maintain immersion (no neko ears?!), but perhaps it can also be disabled to help this other kind of player.
When in this mode, grant them a warbanner. Perhaps like AA, grant a token which is displayed on their banner which increments every 5 weeks. This will tell others of their determination.
I say five weeks because four weeks has an awkward "next paycheck" overlap.
(Reasons being this is already a major problem for Kickstarter tiers.)
Likes: Markolis and Omnires