Yeah the Waldorf and Akamie's Castle would fit the bill for wave table and FM synthesis in a Eurorack! Do I need lots of VCAs and filters for those two modules? I think having FM, wave table and the few industrial niche modules plus utilities, power/case and some Erica Synth pico modules would make for a fun portable setup. I don't have 50k plus like our wealthy friend on here. Something like this might work?
Of course I would take out the Sputnik touchpad and have it separate to free up rack space for other modules.