Ability to convert Tomestones.

[Seraphor]

It might be feasible if you only convert tomes earned beyond the cap of 2000, because otherwise I feel like this could invalidate a lot of old content. I don't know many people who prefer how their job plays at level 50 compared to level 70, so if you could earn a lot more poetics by only doing level capped content, why run anything else?

And then you have the flip side of the coin, where people who are capped on unwanted poetics want to convert them into mendacity.

There's no simple solution to acheive this.

Just consider that tomestones of creation are already extinct, and mendacity and genesis will go the same way once 5.0 hits.
Spending resources on such a system is probably not worth it.