Wow, it's been nearly a month since I posted any updates. I hadn't noticed.
Anyhow, Mcl-keys is just not a high priority to me right now. I ran into some difficult to solve issues, got sick of it, and have decided to place it into low priority until I can come up with some new ideas. This is not to say I am no longer working on it, just not very actively.
As for KSP-Modular, work has been going well. It is nearly all documented now (with the exception of the handler_cd module and another large module). It is working nicely, and I have it working from a USB stick, which was ultimately the idea anyway. It remains my primary focus.
I am also doing a bit of work on some small programs for fixing Windows issues. For instance, I am working on one to restore the winsock catalog, since I have seen several PCs with broken ones lately.