My only complaint is that the initial "I Agree" thing seems to be case sensitive, when nothing else in the process is, which is confusing. It goes through anyway, but I got the insulting "you can't follow directions" message, which hurt my self-esteem. A quick call to my therapist allowed me to move on though.
Teehee well otherwise this worked flawlessly, not a single issue. I just wish I had found it sooner.
As a noob (I'm a network tech but new to all things Wii), what confused me most was the menu version lingo. There's a lot of info online about either "4.3U disc exploits" and "4.3 discless exploits", which made it seem like there's a "4.3" version (with no letter) that CAN be hacked with no disc, but if you have "4.3U" you need a disc (even within the ModMii wizard there is a little confusion there, but not as bad).
Anyway big thanks to the devs. ModMii should be the first Google result for "wii softmod" instead of the crap there now. I'll try to spread the word.