Just stumbled across Shapesmith, an in browser 3D creation tool.
This is no TinkerCad, you can loft, do boolean operations, fillet, rotational extrudes.
The interface is really pleasant and intuitive.
Best of all it has parametric features ala SCAD.
If this could be combined in someway with CoffeeScad by Kaosat we could have the holy grail of an easy to use, web interfaced, parametric “Scaddy” modeller that produces pure solid geometry and is oriented to 3D printing.
I am excited.