Rev 1) In a situation where only defenseless transports are present a single attacking piece can be used to destroy them allowing the rest to perfrom offshore bombardment.
I think this is a question of value… You can chose to ignore transports, allowing Bombardment on the territory, which improves your chances of winning the IPC’s and position from territory.
…OR choose to sink Transports Each costing 7 IPC’s but lose the bombardment option.
I think they did this to force the choice, for strategic purposes and game balance
Rev 2) This is much more radical. In a situation where there is a defending fleet, some of the attacking fleet is held in reserve. Combat occurs in the sea zone and if the attacker wins, then the the reserve fleet performs offshore bombardment.
Doesn’t make much sense to me, If an Entire Sea Zone is considered hostile because of any amount of surface warships, any Sea units entering their fire range are vulnerable. If i were a defending Carrier with planes and i see lots of ships Im gonna try to sink the most valued units, it would help my defense in the land portion. Also, if the attacker could do that then the defender should have some similar balancing option, like maybe the ability to retreat defending planes, to the Land Territ.