...Just a final thought about missing features in Moi.

Well, until Moi will be provided with a new cad kernel, I think that one good solution can be :
1) install a free version of Fusion360
2) export to it any model that Moi can't fillet or shell or offset
3) bring it back to Moi.

I don't see any other way by now.

Bye.

Marco (mkdm)