Ranger and warrior cc on their longbow both have white whispies coming out of it as a tell (ranger longbow just count the cd and predict it and the stealth tbh, or fake coming out of LoS and get them to shoot it into terrain).
The engi pull I think people these days cast it untargeted, then retarget at someone so there's no beam animation, regardless of stealth. Which could probably do with a better tell, but tbh just keep track of the cooldown and expect it if they stealth, or if they're just inactive for a second when they should be going offensive, then probably dodge cause they're casting it.
And I agree, counterplay is a good thing. People in gw2 tend to call for rebalancing instead of taking the time to figure out the counterplay to the meta, but honestly figuring that out is really rewarding. SSBM is still alive with no changes and people just figure out how to counter everything. Yoshi won a supermajor kitten.