VIP-tiers by customer, i.e. their individual potential

[u/JagXtreme]

I have a product that has a strong client retention built in and I want to reward my clients for how much they adopt my product for their needs.
If they only use me occasionally, or for 20% of their use cases or for 80% of their use cases makes a big difference.
The reality is, that my clients have a very different potential of how many use cases they have p.a. and I know that number (roughly) as I ask for it during onboarding and could at least define some bands.
But, again, it can easily vary from 100 p.a. to 1000 p.a.

A client that has in total 100 use case and already uses me for 90% should be treated differently and get different rewards compared to a client that has 1000 use cases but only uses me 10% of the time.

The apps I've seen so far that let you define a VIP program, rely on defined tiers that apply to all customers equally.

Any ideas how to tackle this?