Trying to find viable alternative to the already excellent QuadArc design. Clearly still WIP.

Trying to find viable alternative to the already excellent QuadArc design. Clearly still WIP.
My goals:
a) Easier to be adjusted without constraining too much the cross beams;
b) Better hot-end integration into the design from the start;
c) Compact, rigid, lightweight and maximizing printable area;
d) Printable without support;
e) Nice (this last one is very subjective).