The downside is he only works with the special The Last Jedi pre-order skin. This mod changes Kylo Ren into his undercover role as Matt, the Radar Technician. Please check out the Saturday Night Live sketch so you know why we included this.
This only works in Arcade, unfortunately. This mod corrects that issue, making lightsabers one-hit kills - as they should be. If you don't know, lightsabers have been utterly nerfed in Battlefront 2, so you can no longer kill enemies immediately and have to bash them a few times before they die, even in Arcade. Or "realistic" lightsabers as the mod is slightly ridiculously known. It'll be confusing to play alongside Regular Princess Leia, but that's your own risk.
This mod corrects that, replacing Luke with the classic Expanded Universe version of Jedi Master Leia Organa. The one thing missing from the new Sequels is Leia becoming a proper Jedi Master (Mary Poppins moment notwithstanding).