Since some people seem to think 24 channels in Deflemask is too extreme, I personally think the amount of Sega PCM channels should be adjustable; right now you can only use 5, but there are tracks that used almost all of the 16 channels.
If I were to request for more chips it'd be the OKIM6295, OKIM6258 and YM3812.
grauw wrote:
If I may make a request, support for the YM2151 + YM2149 (AY-3-8910) combination would be nice for composing music for the MSX and X1 Turbo

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This.
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I'm HarmoDevil. Formerly Dr Devil, but I still use the drdevil username here.
Check out my Soundcloud.I might get back to VGM ripping someday.