I'm a filthy casual who plays all LI builds. From beta to a little after PoF I used to main ele, and I was never a raider or a fractal god but I did decently for myself, used to duo dungeons with a friend waaaay back when that content was still relevant, occasionally solo things that weren't meant to be soloed. Then I had multiple serious medical problems crop up, and I thought I was going to have to quit GW2 entirely for a good while because the amount of button pressing needed to stay alive was causing me serious pain and damaging my wrists and hands, even just playing for only like an hour and taking lots of breaks. Switching my main class and using LI builds that involve immensely less keypresses enabled me to keep playing this game I still love, which is a blessing as my health continues to deteriorate and there aren't a lot of other fun things I'm able to do.
I just want LI builds to stay viable. I don't need to be able to solo legendaries, I can wait for other players to show up to do that OW event with the champ at the end, I'll happily run away if I overpull or else take the L if I die because I wandered into the wrong mob-laden spot by myself on accident. Those are all normal reasonable things to happen in OW exploration. All I want is to be able to successfully complete the story content, explore the maps, scrounge up the gold and currency to do a little fashion wars, and RP a little (RP in an MMORPG! Gasp! Scandalous!), while using my LI builds. Anet, please don't completely kill sustain. Some of us have done all the git gudding that we're physically able to do. I don't need the same rewards as elite raiders, I just want to see the pleb content that anybody should be able to complete while using a build that doesn't leave me unable to use my hands after an hour.