as somebody that teaches SketchCrap for Interior Design I find the new manifold extrude tool quite nice, but it lacks the crucial ability to punch holes the way SketchUp can.
From my point this new tools feels missing a crucial tool - I dont even know where to really use it atm without the hole punch ability.
Germano has been working on a destructive extrude patch (ie. hole punching), though he may have been waiting for Howard to get done with the new boolean code. I think the manifold extrude uses the old boolean code to an extent.
Now that the new booleans are in, I would think there would be priority in finishing it, as the biggest potential roadblock has been removed.
Would be nice to have a manifold bevel tool with which you can create bevels/fillets that eat through geometry without getting stuck on a vertex. Like in CAD tools.