Greetings. I've been checking out the plugin suite over the last week and generally really liking it. In particular, the tape is the first time I feel like I'm actually getting some punch from a tape emulation, rather than just saturation or an eq curve. I think it's going to live on my master buss for a while. Also loving the pres and distortion from various units. And Mu compressor sounds pretty awesome.
Improvements:
I think it would be really nice if you added a fine control to the knobs, like many plugins have when pressing the control or shift keys.
A "direct off" button could be really useful on Echo (so you could use it on a send), and a mix knob on compressors (it exists on some of them, but not on the Mu for whatever reason).
I also think that some compressors could use a wider makeup gain range, like 24db, since sometimes they compress really heavily on default, and then you have to take down the input gain, and then bring up the makeup etc.
The range of frequencies on high/low pass filters in XQ could also be extended to full range - sometimes you want to bring that LPF down to 200hz. A q/resonance control would be nice too.
Some bugs I've noticed:
The makeup gain on compressors in Strip is still active even if the compressor module isn't "In", making it impossible to level match.
A B C comparison buckets don't include the settings from the Rear, which is a problem when you change those between buckets.
(Reaper 7, 44.1khz, version 0.7.7)
Finally, this isn't exactly a bug, but I've noticed the SSL E, API, and Neve based eqs don't sound similar at all to other emulations of them. Like the shelf curves are completely different on SSL and Neve, and API bells are much narrower on yours. Maybe everyone else is doing it wrong, but I suspect otherwise - the Neve high-shelf for instance is famous for having a gentle slope that then dips in the mids, while your version is more of a generic high-shelf. This might be due to special components that weren't included in your models.
Anyway, it's going to take me a while to really dig deep into these plugins, but I wish you all the luck and hope to see more in the future.