Yes, there were some things that were broken.
The old search functionality was basically non-functional. You could not retrieve old threads with it.
On an almost weekly basis, I had someone contact me because the forum would not let them log in. This wasn't a case of the problem being between the keyboard and monitor. There was some type of cookie management problem with the old site.
In two years of running on it, there was no upgrades. The youtube functionality, as well as a couple of other things, I had to write myself.
There are a ton of features on the new site that you should feel free NOT to use if you choose not to. They're available if you'd like to use them.
Finally, club officer elections are coming up this may. You're free to run. Members elect the officers, officers run club operations.
The old forum had several different skins, and this one will too, if you don't like the plain looks. It's not the most pressing item on the agenda right now.
Lastly... This was posted 9 days prior to the migration: http://www.usa7s.com/vb/showthread.php?t=3289&highlight=vbulletin