nobile is definitely on the agenda
vbulletin 4 was/is rubbish in my opinion. It does have some nice features, but I am sure a lot of people would prefer version 3 over 4.
There is talk of vbulletin version 5 coming out in the not too distant future, depending on how that is, this forum will more than likely just skip to version 5 and bypass version 4 completely. I will look at a professional redesign if I decide to upgrade to vb5.
I really dont like the way vbulletin is headed since they sold out to some venture capital firm. I wouldnt even rule out a switch to invision or xenforo, I am just waiting to see how vbulletin 5 thing turns out.
I think I would prefer forumrunner over tapatalk, not sure if I will use mobile optimised pages or a mobile app. Either way I cant afford to completely ignore mobile.