The main thing Eurorack will offer instead is unique experiences. AE Modular seems to have some great stuff, but it is ultimately fairly traditional synthesis without much variety in concept and interface. Not a bad thing at all (focused systems are productive systems) but different. You should probably start by looking at some unique sound sources/oscillators and a unique filter/VCA/low pass gate or other way of articulating the sound. I can't really be too specific here – this is a personal choice that will make your system yours. Maybe a unique sequencing system, as well. Something that feels malleable and musical like what you want, but operates in a more hands-on or abstract way to program a sequence (like the Mimetic). You can also use the Polyend Tracker in combination with a MIDI converter so that while the Mimetic or your other modular stuff (quantizers plus modulation are a great trick for this) actually does the sequencing and you can manipulate that with the modular interface, the modular is still being clocked and controlled by the Tracker in conjunction with whatever it's doing, and a combination of both can also be used.