I think it would be better if a small convoy leaves nation's capitol empty (with extra pilots as passangers) heading for a TPG station and return loaded with weapons/components/new ships. Routes are alternated, like 16h Itan<->Nyrius and 19h Sol2<->AA.

A little furter, SCHEDULED missions, group-aimed:
* ESCORT: Defend {$nation} convoy departing at HH:MM GMT.
* INTERCEPT: Destroy {$nation} convoy departing at HH:MM GMT.
. (GMT=GaMeTime).

Since this is very similar to CtC. Should be announced on same CtC channels.