Bimmersport survived the last major update just fine, i'm sure it will this time. The admins have already said they are still working on the theme options, but obviously paid work comes first so im sure the little spare time they have they are faithfully working away at it, however they also have to have a life outside of work and bimmersport.
I myself am extremely appreciative of the change, there are a lot of very good features and the "issues" everyone seems to be moaning about are not even remotely unfixable, and indeed with time I can see the crinkles all being ironed out.
I am always thankful for the tireless work of our admins, having seen them struggle through numerous setbacks over the years and never have an outage of more than a day, all the while maintaining their day jobs and dealing with equipment failures and other such dramas associated with hosting a forum. Thanks guys, and keep up the good work!