I wish a new team would do this, but I doubt it would do justice to the original.... and I remember Speeder and his team wouldn't do a redo of Mental Omega to other engines at this time.
If OpenRA has the Ares 1.0+ features, MO would have had the opportunity to run as an Indie and standalone mod of RA2 YR.
If OpenSAGE was complete by now, there should be Mental Omega 4.0 as an Indie.
As of today, OpenSAGE first version is officially released with limited features.