To keep up to date with 2.2.x releases, I'd preface each and every addition to your PHP files with
PHP Code:
//HACKSTART -name of hack-
and then
PHP Code:
//HACKSTOP -name of hack-
Also use Beyond Compare or some other tool to do the comparisons.
As for vB3, I'm totally there man. It is SO fast. The redirect screens are GONE and so many other improvements.
Hacking should be easier with the way templates are working now. You can do if statements in the templates!