Q2: Why can I / the AI load tanks into cargo helicopters, i thought they were for transporting troops (paratroopers).
A2: Its a bug that is easy to correct, here goes.
1 open the file called Units.txt in your favorite text editor (path \ctp2_data\default\gamedata from where you installed ctp2).
2 do a search for the word UNIT_TANK and find the line underneath that says "Size: Small".
3 change that line to "Size: Medium" and save the file.
remember when i say "something" it means just that but without the " ".