NO DON'T, I need 1 or two more days
Hopefully we will see more people making good sized patrol fleets with the change
The new system will use the defensive strength of the defending fleet to determine how much effect it has -- so I'd suggest building frigates or destroyers... Also, if the defending fleet's defense strength is large enough (greater than attacker's attack strength/10), it will stop the attack from happening that turn (combat of course will still happen...)
The defender(s) will also change the amount of damage done by attacker's who can get through (proportional to their defense strength).
I'm also going to up the capitulation chance a bit... I'll send out an announcement in the turn report, probably tomorrow, and make the change in a few days (give people some time to fiddle...)