I apologize if I already mentioned this, but I have evolved to using "Trigger by Name", or actually MACRO: Execute Macro by Name (Spotlight) by @DanThomas for most of my macros, especially those that I don't use many times a day.
If I can't find an intuitive, mnemonic (for me) hot key, then assigning some esoteric hot key that I will never remember is a waste of time.