IraqiWalker, on 21 September 2014 - 02:08 PM, said:
No problem with dropping the armor down. We usually use these as "shield arms" The best example being the entire Centurion chassis. Every single variant has a big left shield arm.
dropping the armor down to 1 on the arm, negates the purpose of it being a shield arm. If it has 1 armor, and get's blown off with 1 hit than it's not a shield arm.
Nevertheless, the downside to dropping your armor to 1 is that if you are running an XL engine, if you turn sideways, your XL engine can be hit (on most mechs), since you will have no shield arm.
Furthermore, in big games or 1v1s, mechs can see your arm smoking quickly behind hills and be able to target you easily.
I tend to avoid dropping the armor to 1, although dropping it a little to get an extra heatsink or weapon is fine, but I would avoid 1, especially on XL engines where you want to use the arm to shield you from side hits.