I want to use the Specialization of Rouge first because I think is the one that fits better with me but there is also the Pioneer which gives you extra exp so I could level up faster the other specializations but I don’t know… the boost of the Pionner is really worth it? I mean, would be a good idea to unlock this one first and then try to get the others with this mod?
Pioneer. Plus you get the Evangelion-looking helmet with it. 
Rouge means red… Rogue is a specialization…
Anyways, I would choose Rogue because of the Stability mod.
I couldn’t care less about the armors, I don’t like any of them I’m already only using Mark VI.
I do want to use Rouge because of the Stability but I want to know if Pioneer gives you a good boost on exp to make a better judgement about it.