Am i the only one experiencing this? Researching, making, and equipping your soldiers with jackal armor might probably be a death trap. Firstly - the limited vision is a huge minus, as most of the other aliens, even sebillians, can spot me and shoot before i can (i'm not even talking about ceasans). The extra weight is also a turn off, since i like to equip every soldier with a medipack, just in case (considering that the jackal armor has only marginal protection capabilities). It's expensive and time consuming to make. In conclusion - my entire squadron, equipped with jackal armor has an overall worse combat performance than equipped with basic armor. The only workaround i see is that you either remove vision penalty, weight penalty, or you increase the defensive properties of the armor.
TL;DR Jackal is utterly shitty, even basic armor is better