Personally i like the idea of joint mechanized and infantry battles. My idea would be to use the same town and map room set up for base caps like we already have, but with a few major changes:
1) a player (either attacker or defender) using a troop carrier (c47, lvt, m3) arrives on location. The player then drops a spawn point instead of AI troops. The spawn point is a doppelganger representation of the actual player-controlled troop carrier. If found, spawn points may be destroyed by any reasonable means to prevent more spawns.
2) each spawn point is only good for a fixed number of spawns (e.g. Jeep=3 infantry, apc=10 infantry, goon= stick of paratroopers). On the country map, a player will select a tab to "show troop spawns". When the player spawns in to the fake troop carrier, the player will then be able to select a kit (GI, AT, engineer, machine gunner).
3) troops and spawn points will not be identifiable from any mechanized vehicle (except a storch, perhaps). Only troops will be able to ID other troops as friend or foe.
4) a town must still be white flagged and have all major AA guns destroyed in order to cap the map room. However, there may be additional troop-controlled positions and defenses that do not necessarily need to be destroyed to allow a cap.
5) in order to cap a field, an attacking trooper must fight his/her way into the maproom and hold it for a certain amount of time. (Required number of troops in the maproom for a change can also be adjusted).