Maximum number of optical filters

Hi, I’m running into the limitation of the optical filters to be max. 12 filters. I use a manual filter drawer and I (wish to) have really a lot of filters (and I plan to extend it even more):
R, G, B, L, Ha, O3, S2, N2, Hb, UV, NIR-BB, 2x NIR-NB, None, Suprasil, Dark,… tbc.
It would be nice to be able to have all of them in one list.
Thank you!
Andreas