As per the title. Posting this right after Ondsel yet again catastrophically destroying a smaller, but mid-complexity multi-part assembly. As such, FreeCAD and Ondsel are non-starters due to the amount of detrimental bugs. I have used SolveSpace for a short time, but it lacks many features (chamfer, fillet tools as base examples).
I have looked into OpenSCAD previously, but decided learning the scripting language wasn't worth the time. Perhaps with other FOSS options running out, it's time to give it a fair try. If it's CAD kernel is particularly reliable and it has some way to interchange sets of defined parameters like FreeCAD's Configuration Tables, OpenSCAD may be a clear winner.
To note at this point, I am not opposed to using or purchasing proprietary software, as long as the Linux support isn't half-assed and the price is reasonable (no subscriptions, having a lifetime license for personal/small-time commercial under ~$400 USD per seat).
If anyone has suggestions, or better yet has used something that might fit what I am looking for, I'd love to hear about it.