Sarissa?Use a Ranseur.It's better.:P
Osiris?Use a Legate,it's better.:P
+0
Stop it.Seriously,stop whining.Stop Q_Qing and stop trolling.Stop exaggerating things which are minor,stop whining about stuff which happens every time the blue moon appears.Stop Q_Qing because people do not comply to your wishes.This is not your personal universe where you can lord everyone around and judge people using your emotions.Think logically.Think.Just think.
I'm gone.Goodbye.
With 2 pulses and 2 mortars an Osiris can kill any larger battleship. Then you have 8 slots free for auxiliary weapons. I'd go for 4 solaris (bye bye gunboats and below) and 4 cerberus (omnomnom silly cruisers).