Offering More Than 4 Price Tiers on Shopify Billing API?

[mthdvd]

I'm working with the Shopify Billing API and have some questions about navigating around the 4 price tier/plan limitation.

For my app, I’d like to offer more than four plans. My primary use case would be to preserve legacy pricing available for users who switch to the Shopify App (which has a different pricing structure). But there are also other use cases where creating unique pricing for a particular store would be handy.

I've come across a potential workaround using `appSubscriptionCreate` and similar mutations to essentially bypass the 4-tier restriction. Shopify seems to indicate that this is an appropriate solution: 

https://shopify.dev/docs/api/admin-graphql/2024-10/mutations/appsubscriptioncreate.

However, I'm concerned that implementing something like this might go against Shopify’s Partner Agreement or their intended use of the API.

If this is allowed, what's stopping someone from creating as many pricing tiers ad-hoc whenever they might be useful? Granted, only four will be published on the app's listing page.

Has anyone here tried offering more than 4 tiers, or know if using `appSubscriptionCreate` in this way would be a red flag for Shopify?

I want to stay within their guidelines, so any insights or experiences would be much appreciated!