Imagine you have a 4 vs 4.
Faction A vs faction B.
Player B1 dies, now it's 4 vs 3.
Now Player B1 logs a ship of faction A "because he can" - which results in a 5 vs 3.
Player B4 dies, now it's 5 vs 2.
Logs a faction A ship, now it's 6 vs 2.
Wheee...
Even worse if the losing faction is already outnumbered.
So, no, I don't see the point. Just makes unfair fight even worse once the first people start dying.
I like how the rule is now.
EDIT:
Waaaaait...unless I misunderstood that.
Opposing force would be faction A for a player from faction B?
That would ... well ... that would still be problematic, when you, like, consider how many enemies GRN has:
People fighting GRN and getting killed by them could just come back 5 times or something.