Reasonable mods don't need a denominator with more factors than 81000 has

Transactions solve real problems that a simpler simulation api doesn't

Using fraction objects is the best solution

Picking a denominator for all mods is better than using fraction objects

Simulations cover the usecases of all known mods well enough

The increased costs of transactions are worth the flexibility it provides

It is fine to limit mods to a fixed denominator in order to use longs instead of objects