Do these have the option to have custom keys? If not, what are the options these days for a better remote? E.g. one with ‘soft’ key labels, or I suppose just a touchscreen so you can have customisable source labels, etc.?

818v3, DSP7200.2, HD621, Oppo BDP-105, Sony VPL-HW55ES projector, Kimber Mains Cables, Russ Andrews Rack and Mains Filtration, GIK Room Treatments