I use the typical Star-Lord build that I've used since before his Elemental Gun changes. I haven't incorporated the E.G. tree into my build since I don't find it useful with the playstyle I use with Star Lord. I find Quill to be a unique hero in this game with this build and can be quite fun. This build is also useful for farming Cosmics, it is Raid Ready, and for any other tasks you need someone to just blow everything up at once with.