Before we go ahead - I would like to mention that I PERSONALLY called for something to combat permastealth deadeyes before marked sentries etc were added to WvW. I made a video on it which blew up and many people agreed. But instead of sorting this out with the deadeye specialization all stealth oriented builds are literally rendered useless a lot of the time. Take roaming in EBG for example - you run past a tower (literally everywhere), marked, boom stealth is practically out of play for 30 seconds bad luck. Add Sentries and Keeps to that - you are literally countered almost anywhere on the map.
What are these players to do? Only sit in their half of the map? Marked really needs to be looked at because 30s of no stealthing for long at a time is honestly insanely triggering especially in clutch/intense type situations where that stealth really matters but there is literally nothing you can do. Regular D/P Thieves, Many mesmer builds, Holosmith tool belt, rangers who smoke leap or hunters shot, scrappers with stealth gyro etc - why are literally all of these classes punished because of one overpowered class?
In all honesty, as annoying as it was having permastealth deadeyes one shot you from stealth - I would rather see the mode return to how it was BEFORE marked revealed you at every corner of the map. Please look into this, especially now that the potential upcoming WvW changes will implement much more reveal around the board anyway.