Those are all great ideas, but there is one thing that concerns me.
The markers that you put under the miniatures, whether they be poker chips or cardboard, or whatever: isn't it a pain to keep having to pick up the miniature, put down a new marker, remove an old one, etc.?
I have a mental image of the miniatures falling like dominos because of trying to add/remove markers from under a miniature in the middle of a crowd.
I can't help thinking that it would be easier to put something on TOP of the miniature.
Obviously, I haven't played with this method yet -- am I inventing a problem that doesn't exist?
The funny thing is that the people who do this are the ones who are not inclined towards math and arithmetic. The ones that do find doing arithmetic in their heads quickly have all the final bonuses for everything they can do pre-calculated, but those who struggle with adding up all the modifiers quickly in their head make themselves do it every single time they roll.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.