Hi, I don’t think AT will ever manage another chip than the AY/YM, because each chip has its specification and would require its very own instrument editor, plus the specific assembler player… And I don’t have the hardware, so I would have to use an emulator. Basically, it just wouldn’t be fun to do :).
Plus I’m not sure many people would use this feature, as I’m pretty sure these chips already have good trackers to compose with?