I already posted my full rant on the actual thread but in the proposed upcoming balance changes thread Anet posted, one of the things they want to do is take away Scrapper's Chemical Field and replace it with Detection Pulse. Across all game modes, not just in WvW which is what this change is based on. In the thread they highlight changes that will be WvW exclusive and this one doesn't have that, it's going to be for Scrapper as a whole.
So Scrapper won't be able to reduce enemy healing with a poison field, which is a support function that it as a support class can perform. And Scrapper also won't be able to create and use its own poison combo fields anymore, despite it being a class designed around using combo fields. Instead you get a Detection Pulse which is virtually worthless in PVE and is only useful in PVP once every five or twenty matches when you encounter a Deadeye or stealthbomb Holosmith. So they want to take away a skill that serves both core features Scrapper has, support and combo fields; and replace it with something that doesn't really do either of those things, has almost zero applicability in PvE and is only rarely useful in PvP and WvW.
I'm not usually so obsessively angry over a change like this in a video game, but Scrapper is the only class I legitimately enjoy in PvP and it has a really unique gimmick which is extremely niche because of how useless so many of its traits are now which have never been balanced. It got buffed, which brought me back into it, then it got nerfed but I kept using it because I still like it. And now the developers who are supposed to be the main authority on this game are suggesting they not only make it worse but also make it fundamentally more shallow gameplay wise. Since instead of having a combo field and anti-healing ability, you'll have a click-to-destealth-that-one-deadeye-you-encounter-every-ten-games-then-do-nothing-about-it-because-bunker-scrapper-has-barely-any-DPS-pressure-so-revealing-stealths-is-only-useful-if-you-have-allies-immediately-nearby-who-can-jump-them.
I don't play WvW so I have zero clue how this matters or not in WvW, but in both PvP and PvE this change exclusively only reduces the gameplay variety of Scrapper and makes it less effective at the same time. If you're a Scrapper please go to that thread and tell them to knock it off with these changes. Because that's their feedback thread so basically this is the ONLY chance Scrappers have to stop Anet from making their own game less fun for us.