I've been reporting updates to Filipe, even though he doesn't understand my mumbo jumbo Source Engine speak, but i'll post about the updates here now that i've made some progress
I removed an unnecessary bone for the hands (old), figured out how to connect the actual hand bones to the arm bones (old, and thanks to Blender not being a headache like MS3D), resized the Blockhead to be the same size as the current Gmod Blockhead so that it's compatible with the accessories (recent-ish), fixed the positions of the finger bones (recent-ish, and again, thanks to Blender), redone texture sheet to incorporate the face decal (recent, the eyes and mouth will be layered over hair and glasses now, but now there's no more ugly transparency issues with certain faces)
And now i'm working on Blockheads based on the ones from the Gmod Blockland pack
At some future point i will release the accessories and have them able to be bone merged to the Blockhead so that people won't have to manually adjust the items onto the Blockhead