I'm also planning to get the NXT 4 and have similar concerns about the bag. I see on Gollihur site another padded case for about $125, which I would consider, but it apparently would not have space for the tripod and/or end pin. Would like to see a pic of the gig bag that comes with the NXT 4; maybe additional padding could be added from a fabric store?
The padding is what I'm worried about as well... and was thinking that if needed, a $29 foam mattress pad from Walmart could be hacked up and inserted.
It would be a shame if the gig bag really is that weak. I went to an open jam once and one of the players had a Dean Pace EUB, and that gig bag looked like you could knock it around quite a bit without any worries.
5sg.