Currently ChimeraX  displays a *.cube file with just one molecular orbital in it from ORCA 6.1.1 (processed by orca_plot). It would be nice if Chimera X can display all Molecular Orbitals of a system at the one time.

Display overtone and combination bands of an IR spectrum, again from ORCA 6.1.1.

Able to select atoms (elements) to build complex systems, then optimizing that system to find the Ground State of that system. Then exporting the co-ordinates of that system into an input file for ORCA 6.1.1 and beyond.