I don't feel any of those ships or upgrades are op. They all have limitations and they all have their strengths.
I don't see how a 1 point tax is really going to change anything anyways. Can we put a negative 2 point tax on things that don't get used? Let's put a -2 tax on the Star viper and its title. Or a -2 tax on all the unused Droids or T-65's that are not used.
I feel the game is in a good place right now. There are plenty of different top lists to play around with. Yes there might be a lot of Defender/x7 lists out there. But if you practice against them you can beat them pretty easily. The party bus is easy to get behind to make it almost useless. Manaroo is pretty easy to kill. I seem to remember when Mindlink came out people didn't like the card. "It gives stress to everyone!" That's crappy!
Some people are never going to be happy. That's just plan and simple. Let the game be.