well, class programming offers great advantages not only for me as a programmer but for the users too.
To understand that, some learning is required.
I think, there are some usability issues with the whole class feature.
Actualy, writing own formula is more easy than using classes, and most of folks there don't uses purpoted advantages of using classes. Formula parts don't fit so well together, and classes aren't divided by subclasses and placed accordingly. That is, "transformations" aren't placed under "transformations", but are in many different user files, REB, DMJ, MMF...
I don't want to sound mean;) But maybe you should make some easy to use switch formula with kalisets class alredy in, so that 2 clicks would be required to change one kaliset formula for an other.
Here is last and pretty typical UF mailinglist fractal. They are very conservative in their choices TM1,2,3.ufm and doodads colouring.
bc-14-4-2012-spelen-4+Mad+cab {
; Copyright © 2012 by Juliette Gribnau.
; tweaks in list welcome
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}