This would make that spire stronger, for example, though this is a fringe case- given the difficulty of use (a mobula with first strike advantage would be a lot more deadly than a minospire with first strike, given the minotaur's slow turning speed when slightly damaged, and the nature of the spire. I don't see the need for detailed analysis of this one case..
I want to make a detailed post with regard to all of the changes, resources need to be gathered though, if anyone is interested in the problems with the mobula changes, though most of it boils down to the mobula being near useless at close range against close range ships, and the restriction to meta builds whilst we were beginning to see a plethora of new, interesting mobula builds in both public and competitive matches.
Just to clarify, at higher levels, close ranges ships like the fish (not the pyramidion) will be able to approach mobulas with fair ease without too much danger, at which point the mobulas will be too vulnerable with the modified gun arcs (they already lose 1v1 against a fish at the higher levels of play, it would just be more difficult). [Insert tedious explanation of last point with information about gatling and explosive weapon(flak, banshee) gun arcs here upon request]. The exact same argument applies for lower level play, with a different explanation for the points made.
At mid level play, I am not entirely sure, though I don't think we see enough mobulas to induce this change. Even if it in some way improved play at this level (which I don't think it would), it wouldn't be worth the trade-off for the current complexity of viable mobula builds currently available, and its effects on mobula numbers in both higher and lower levels of play. I think this is a very bad proposed change for the game in general.
I'll post later about the other things, though the other change that really bugs me is the lochnagar one, since it's not a viable ammo choice for anything but the minotaur, and it spoils current builds, in particular the carronade fish (which isn't really considered overpowered or such), and drastically weakens lochnagar mines.
I agree with most of the feedback here, other than that concerning the squid, and whatever Solidus said