I think that in most cases, if there is a question of whether or not something should have lightsabers added to it, the answer should overwhelmingly be yes. Case in point, the stairway scene of Daredevil season 2, which is obviously the best scene the entire second season of Daredevil just got a ton of lightsabers added to it. And it is awesome.
ImmersionVFX on YouTube has done the editing and the adding, and you have got to give them a lot of credit for making the crimson blades look completely natural, almost like the scene was supposed to be a bunch of seriously under-trained Sith going after a lone, Daredevil Jedi and losing very, very badly.
Take a look at the video below, Daredevil's third season is expected sometime in 2018, although an official release date hasn't been announced yet. The rest of the Marvel Netflix world is still chugging along as well, with the next season of Marvel's Luke Cage to be released on June 22, and new seasons of Iron Fist, The Punisher and Jessica Jones all in the works as well.