First time poster here, hopefully you can help me with something.
I've recently opened an older Typeface I designed back in 2004 (ARS Robust) in order to take another swing in implementing a feature that is essential to the character of the Typeface, before I officially release it.
The design integrates two types of attachable shapes (serifs) that in combination with the letter forms can create custom ligatures or aesthetic modifications to the letters or spacing at will, chosen by the user/designer. The system i came up with so far is placing each form in different places with different key combination.
I'm not sure this is a very user-friendly system, do you? I'm trying to solve this maybe with OpenType coding or something like that.