Check out the Moog Grandmother or the Matriarch. I don't think they are going to sound like the M32 but they do have that Moog sound. Both are semi-modular compatible but don't require any patching to work for your most basic sounds.
If you're looking for polyphony, patch recall and so forth... a traditional all-in-one synth would definitely suit you better. Most stand alone synths operate at line level. Eurorack operates at "synth level" which is a lot hotter... more volts... than line level. So if you want to use Eurorack to process your sound then you'll want some line to synth level converter to go into your Eurorack and probably synth to line level to get into the rest of your set-up. There are a lot of ways to do it, but this is the sure-fire way. It is possible to also sync your stand-alone synth to Eurorack components. Some forward thinking synths have CV and gate outs. Others you'll have to find a MIDI to CV converter to go from MIDI clock to eurorack clock.
There's nothing wrong with finding a pure Eurorack set-up not-for-you. You hit the nail on the head when you wrote that it's not worth it to spend so much time tweaking modules when you want something that is relatively simple most of the time.