On the subject of rounds no longer colliding with your own ship:
I feel that this change takes a little bit away from the gunner-pilot coordination, as well as a little bit of the authenticity of the game.
I understand that it's frustrating as a new player to be taking shots and suddenly start hitting your own ship, but in my opinion that's when you should start talking to your captain, so you can coordinate the swift death of your enemies!
It also changes the balance of ships like the Pyra. You can fling bullets through your nose cones, but you deny the enemy the opportunity to destroy those guns. You can shoot them, and they have no chance to prevent it. This takes a great deal of the positioning requirements for the Pyra away. I know it's supposed to be one of the easier ships to learn, but those guns are difficult enough to destroy and can put a lot of damage on a target.
Perhaps it's not as big of a deal to the rest of you, in which case I will be a bit heartbroken but ultimately change my tactics to shoot up at people. I do feel rather strongly that if the ship is in the way, then the ship should be in the way. I can't shoot through my ally, so why am I able to shoot through myself? It just feels wrong to me (and allows really strange and possibly unbalanced tactics with the already powerful pyra).