Zune pass-through for Reaction?

Hello! I was just looking at the AROS sources on GitHub and saw that there was a 20+ year old attempt at porting the Zune version of MUIMaster.library to AmigaOS. There are makefiles for both AmigaOS 3 and AmigaOS 4. I was wondering if overhead could be trimmed by making the layout engine use Layout.class instead of its own implementation. There would definitely be better cache hits if there weren't two layout engines dirtying the caches at the same time.

It's a thought, anyway, and the license is AROS Public License 1.1 (derived from Mozilla Public License of the same version).