One annoyance that I've had for ages is the default search range of newer then 1 week. It gets just a tad annoying changing it to newer then 5 years every time. The old (N new) in the "Last post" column was brilliant however I'm not sure if its a feature of the old version not included in this one. Last but not least some more themes, as stated by others.
Something you might want to look into is that the main site menu on the left changes colour while on the forums. Strangely i personally prefer the site navigation colours while on the forum
Thats about it i think, thanks for upgrading.
