Well a "reviews" section probably wouldn't be too hard in your case. Since you don't appear to be using the latest threads portion of the script, you could fairly easily turn that into a reviews section instead. You would just make a new forum for your reviews and make sure permissions are set correctly so you can moderate new threads. Then just open your myvbindex.php file and look for:
WHERE open<>10 $iforumperms
Replace that with:
WHERE open<>10 AND forumid=XX
(you would just replace XX there with the forumid of your reviews forum)
Also, in that same line of code you will see "ORDER BY lastpost". If you wanted the threads to be displayed in the order they were created rather than by when the last post was made, you could replace that with "ORDER BY threadid". That should be enough to get you started on that.
As for a a counter system, see
this post on vbulletin.com and it should help you to include the file for the counter.
As for a photo gallery hack, there's at least one or two released here. Some other solutions you might look at would be
http://photopost.com,
http://4homepages.de,
http://gallery.menalto.com/, There's a million other image gallery scripts out there as well, so just look around.
Hopefully I'll have my advanced version of this script finished up in a few months. It will include everything you asked about here and a lot more, but it'll be a little while before it's finished, and it won't be free.