Adfree was removed, i believe, because it was breaking stuff in the ROM or one of his other RIMS so he removed. There is a note about it in his changelog.
I wouldn't mess with the HBOOT. I know it has caused some problems in the past with rooting. Well, I should say I think. I remember having issues flashing new phone with upgraded HBOOT. The rooting process wasn't the same as my old original EVO.
Wireless Tether is up to pre15 even though RC1 and RC2 have been released. I am using RC1 and haven't had any issues with it at all. I was having conection and disconnect issues with the wireless tether that was in the ROM. You can find the latest version on the here:
http://code. google.com/p/android-wifi-tether/downloads/list
Some .apk's need to be loaded through the command prompt.
Hope this helps