I love Unplugged and I thought Kurt did an amazing job vocally, but I understand what you mean. Nirvana is typically a very loud, in-your-face kind of band and acoustically was a new thing they never tried much, especially on such a large scale like that. I just think Kurt had so much potential to also do soft stuff because he could be very emotional and I am at least glad he did an all acoustic set like that with some left field song choices.
Muddy Banks ain't bad. One great thing about it though is there are some pre-Nevermind shows on there. Not exactly a huge Bleach fan but their early shows were awesome.
Did you ever get that With The Lights Out boxset? There's some good footage on there too.