Sure, you guys can use any tier you want. I just like tier 1 cause it's very limited & I love the Connie. Mk 12 resrtiction eliminates any special or blue consoles, such as the field gen or any of the Borg/Breen gear or Oberth & Rhode Island consoles. I think using a shuttle might limit you even more than a Tier 1 ship so I would not object to it. It's just something different to do with your friends/fleetmates.