[Imp]

I would disagree & guessing here, for meetings 750 is the minimum but generaly its about 10-15% of your core total, more for advances etc I think. That sounds reasonable it is support & gives the flexibility of tailoring your force to the terrain/engagement type. Yes there are times you cant buy what you want but thats life rarely do you get the perfect force so you have to make do, if that means you buy 1 good helo 2 average ones or change the plan so be it.
If you find yourself regulary using/wanting the same stuff add it to your core.
Wanting more support points for sacrifical lambs, why? Suprised HQ gives you any support at all if you just send them to there deaths.

I think its the first 3 & yes would be nice if you could overide & choose the type. You could make more of a story out of it or base the next battle on the last outcome. Near enough given up campaigns because of this but tend to do the following if play one.
Set visibility low change turns to 2 & set all flags to me.
Dont bother deploying just press turn end 2 times & the battles over.
At the start of the 4th battle I now start the campaign so remember to fudge the dates if needed.