CC121 (eq part) vs. CMCQC (as eq controller)

With some proper software they would have been great. Why can only f buttons be assigned? I have have CC121, QC, CH . Channel select is the same all three. At least they could have different channel select functions. One follows all-channels, one follows mixer view, one follow main view. SHift-channel-select on two gives more options. And still only channel-select. Poor software…