I really should have charged people for these.....
Seriously though, i'm glad you like the rules, and wish you luck with your project....of course, if you ever decide to publish them for profit, i'll sue your AR:SE.....
Best advice is to be ruthless with any extra rules - try to keep to the double-side page of A4, so if you add a rule, you've got to ask yourself the following questions:
1) Does it keep the game flowing?
2) Does it keep the game balanced?
2) Is it in keeping with the character of the game you want?
If the answer isn't yes to all three questions, then don't use it.
Have fun - I'll watch how this develops with interest.