I don't get all the issues people are having went through the guide watched the YouTube that was linked in the guide did the games one by one....oh wait that's it people cant not wait don't have the patience, for me doing it the bleem 1.0 way was great it picked up any issues of a mismatch on the cue files, which i fixed right away using notepad++ all psx games work, i did not have to rebuild any bin files etc it just works, easy now to remove a game i don't like or just add another game to bleem, as for taking out the USB just shut down your PlayStation classic unplug the USB cable for the classic, you are gong to have to do that anyway before plugging back in your USB drive after adding more roms/games etc. Not that hard.
Like other people have said why are you taking it all the time, you have only one USB stick and you need to use it for school/work
OTG will be nice just so i can plug in my usb hard drive in at the back, the only other things i would like is to be able to use a real duelshock analog PlayStation controller which i have a usb adapter for which i use on my c64 mini and laptop oh and haveing a summvm core for retroarch that would make me more happy the using a duelshock analog PlayStation controller