- Certain territories already give minor auto-deployed bonuses after being held for a round (i.e. the Airports on Berlin1961) but I've not seen a map where you get an instant, usable bonus that round for taking that territory, which could be used to maintain the momentum of your advance.
- My suggestion is that if you hold a bonus card naming a certain territory, you get an instant bonus deployed there, for capturing that place. If you lose it and recapture it, you get the bonus every time.
Specifics:
- If you hold the card and take the place, you get an instant bonus dependant on the colour of the bonus card (4 for Red, 6 for Green, 8 for Blue). If you feel that's too strong then halving it (2 R, 3 G, 4 B) also works (and would work better on smaller maps).
- Cashing the card in still works in the normal way - however you might choose to save that card & leave the territory undefended, in order to attempt to recapture it and get the bonus all over again! It works the same for as long as you hold the card.
This will improve the following aspects of the site:
- Gives players incentives to take randomly decided territories, based on the bonus cards they hold, increasing their tactical options. Enemies don't know what are your good territories until you take them.
- Rewards more thoughtful players who bother to watch out for such things, then play to block an opponent.
- Adds an extra dimension to all existing maps, another bonus layer on top of country bonus and total territories bonus.
, so don't know if that would work 
