I've been installing a lot of UltraHDMI kits for people and one thing that annoys me is that I have to train every user on how to use features like IGR (In-Game Reset) because there is no mention in the User Guide. There is mention in the updated installation guide but the whole point of having a separate user guide and installation guide is to isolate the user from that stuff.
As a consequence of it being added in a firmware update, the option is disabled by default and shoved under a seemingly contradictory option. "Disable Hotkeys: No, No+IGR, Yes, Yes+IGR." "Disable Hotkey" originally just referred to the buttons that invoke the very menu the user is navigating, which is conveniently explained on the provided sticker that goes on the underside of the modded console. You can re-enable by booting with no cartridge.
I bring it up because I see a similar issue with the Multi: once direct-boot is enabled, users might not know how to get back to the menu. Can we get a little note on the cartridge label that tells users how to bring up the menu? That would side-step a lot of this, since the other fairly self-explanatory options will then be accessible. I do suggest working the other hotkeys into the menu somewhere for a user to learn without looking it up online or consulting a manual.
Having the menu hotkey on the label with the other hotkeys in the menu ensures that users have access to all the info they need even if they come across this cart loose in the distant future. Granted, custom software may change everything but then I say that the people installing custom software should consider a sticker/label.
I already see that there has been confusion between the three "slots" on the Multi and the physical slot-switching that the MVS is already known for. Might I suggest renaming these to something else, like Blocks or Faves (Preload Blocks/Fastload Favorites if you're not into the whole brevity thing)?
While I understand that making major changes to the menu isn't going to happen at this point, these may be possible to implement just as text/wording changes (and label art isn't a menu anyway). The other hotkeys can just be listed on the relevant menus so that users only need to poke around/explore after reading the menu hotkey on the label. They'll have everything they need to make full use of it.