Thanks for going more in depth.

As far as growth, the Doepfer A-111 has very limited growth potential. As far as a synth voice, it's pretty limited in features compared to stand alone modules or other semi-modular synths.

For example, there isn't a sync input into the VCO section. The FM modulation is hardwired to the LFO or ADSR. There are lots of other examples, but I want to keep this brief.

I would definitely replace the Doepfer with individual modules as soon as possible if you're wanting to learn more in depth.

As long as you're going to a bigger case and are aware of the missing feature-sets, there shouldn't be any worries.