A friend some month ago was at a synth diyrs meeting with also little expo of parts about,
and told me that many were talking about the need of a decent quality rack mount analog mixer
at a free bankruptcy price,
with A-B double inputs on each ch (16x2) like the features of the inline concept,
an enough enhanced eq section and 4+2 switchable (3-4/5-6) aux sends,
all controls by pots-double pots and switches,
or small faders only for the lower input row A .... even if not essential,
to place in the middle of their self-built synths rigs taking a limited 19" rack space like 5-6 units,
thus also having the possibility to insert above and below of it a number of fxs outboards
like reverb, delay, comp-lim, etc.. ,
and to use it also as analog summ , at old school way,
thus being able to control everything located at arm length in a radius of 360° ,
a mic input section on the channels seems not essential,
as all synths, drum machines, etc.. sources are line type,
thus leaving space for more useful ch insert points activable with on-off switch,
and if required an external (adj quality/level) mic pre unit would be preferred,
as it can be integrated on the rig by connecting it with its line out to the mixer or ADA,
given its size this unit would not require expensive large metal chassis, articulated routings, etc...
for the diyrs it could be available as assembly kit, like was for the Korg MS20,
perhaps with the pcb already complete of the components and tested,
even if the feeling is that it would take too much support time,
so perhaps the best thing would be a unit ready to power on and use,
that a certain amount of people, not only synth diyrs,
also a part of DAW fans would like to have a smart analog mix section for various needs,
seem to be looking for.