Yes, I have this issue, if you want to call it an issue.
It's in the least - disappointing, because I have many hardware synths, including vintage synths, Eurorack modular and a couple of modern analog synths, and Microfreak is waaaay lower in output than everything else I own and use.
I haven't checked any specific numbers, but using my UAD Apollo 'unison' mic/pres I have to add as much gain as they will give, just to get Microfreak to mid-level gain in my DAW.
I'm usually attenuating things like my modular.
It makes MIcrofreak less enjoyable to use as I can't hear it very well on it's own, and it's almost impossible to tweak or create sounds while the rest of my production is playing.
Yes, I can process Microfreak through a hardware mic/pre and really crank the volume. I could go through and start raising the level on Microfreak presets, but just having an output level in the same ballpark as the vast majority of other hardware pieces (synths, drum machines etc) seems a really basic requirement to me.