I’d love a new 2203 but given how it’s a simple circuit, to use the spare DSP with a few selectable mods (variable NFB (so we can get the 2204 and 2203 tones), some different cathode bypass cap options, depth circuit, 3 way bright switch, POSSIBLY another gain stage).
I know we have the 2204 mod model but Lee Jackson is probably my least favourite of the known Marshall modder.