Some ideas for your share:

High watermark commission can be a thing, some financial companies work like that.

Another idea would be pay "dividends" in form of Tokens.

Example:

Seed starts: 100k Seed = 1$ each = 100K MC.

After 1 year: 100k Seed = 5$ each = 500k MC.

All Seend moves to stable coin/snapshot and every Seed holder gets 5x more seed tokens.

Seed is now worth 1$ again. Here you can include your fee, like x% of tokens moves to you for a management fee.

Would also allow another funding round for 1$ seed.

Now: 500k Seend = 1$ each = 500k MC.

Sell another X amount of Seed for 1$ each to increase the fund. Not bad at all IMO.

Would be the same like high watermark fees in a IMO cooler way also makes pricing more flexible ( add funds).