SlimeVR
Knock-Knee correction in body proportions (or tracker mechanics idk where it'd go realistically)
Some of us (myself included) have legs that bend inwards slightly, this can be either implemented as either a knee yaw offset, or a lower leg roll offset (preferrably latter in my case, for some former might be better.), or maybe even a foot yaw offset (some of us can pencil pose with our feet angled out, also as a toggle so in-game calibration can be correct)
There's some serious quirks with legs that we currently don't handle at all, it seems to affect people to various extents, but it would be very nice to investigate and have a proper report of the issue with data so we could solve this.
bit of a necro but I did think of something, roll the lower leg in or out depending on knee bend, biggest issue I run into normally is standing my legs spread out a lot but sitting down they clip inside of eachother, will say for extreme cases I think a different mounting calibration might be needed (legs yaw'd out 45 degrees instead of facing forward, this could even be used to automatically calibrate a roll bend correlation offset) if a beta for this gets made I'll be willing to help test, I also own vive trackers so if data is needed I could put on both sets of trackers simultaneously, hop on resonite (it exposes all trackers connected to steamVR not just FBT calibrated ones), and record both sets of trackers doing the same movements at the same time so a baseline for what I'm really doing exists
roll the lower leg in or out depending on knee bend
This was actually something I tried a looong long time ago (years) and it did seem to work. There is potential there, but it hasn't really been explored thoroughly due to lack of a solid calibration method. Looking into new mounting calibration methods is a good idea and is planned, we would appreciate any contributions in that area.