And there is the biggest problem with your argument. Yes, the old games had a lightsaber combat system, but those were the old games. People can't seem to understand that because the new games are developed by a new studio things are going to be different. DICE couldn't take the lightsaber combat code that Pandemic created in 2004-2005 and copy/paste it for use in their 2015 game. Pandemic closed in 2009. They've been dead a long time, and even if DICE could have used code from BFII in BFEA, I doubt it would have worked well.
Everything DICE built was from the ground up without any reuse of code or assets from the original games. Even if they had tried to completely mimic the original, everyone probably would have complained about it feeling "off" anyway.
BFEA has those too...
And IMO, that was trash. BFEA's works really well.
What's wrong with the system that's in place? While playing as Vader, you can block some shots as you move forward to conserve health, then start butchering troops like in Rogue One. You can throw your blade at Rebels and still use Vader's hand to block shots, and once the blade is back in his hands, use force choke to take out a dude. It doesn't even annoyingly run off of stamina like in BFII.
You realize that you can use a controller's triggers (or the equivalent on PC) to engage in combat and not just the shoulder buttons, right? While using the triggers does move you forward slightly, it's something that would normally happen when you're trying to hit a target that is probably wanting to avoid your humming blade of death. Your argument about standing in one place and swinging your lightsaber doesn't make much sense, unless you're referring to saber-on-saber combat, in which case, yeah, that system is still broken, but rarely comes up often enough to become a problem.
Left shoulder button on consoles. You have so much energy to block shots, and all of the shots flying toward you while that energy remains will be blocked.
Also, on the earlier topic of DICE listening to fans that @squeaverking brought up, they built BFEA off of community feedback as well. Basically everyone on the internet said "don't make it a Battlefield clone" and that's what they did. They made a much more casual and arcaidy experience with reduced map and server sizes compared to the originals. They did exactly what the fans wanted and made a new experience (lack of planets and other possible content like eras aside, mainly talking about gameplay here). Turns out though, that what fans wanted WAS a Battlefield clone and endlessly ripped on BFEA because they didn't know what they wanted. Now that BFEAII is looking like a mix between the classic BFII and BFEA, most fans seem appeased.