Should Enemies Be Able to See Thresh Souls?

Thresh is one of my favorite champions. His kit is amazing. Thresh is a champion I love to play with Kalista and Azir- because of link connections and mobility through those links. With Thresh, his hook stuns an enemy and allows him to travel along the chain to the enemy; and his lantern is stationary- drawing a bond between itself and Thresh- and allies may click the lantern to travel this bond to meet Thresh... and these two abilities can be used at once, by re-activating your Death Sentence while as soon as an ally clicks the lantern. Pretty neat! And I say Azir and Kalista with Thresh- because the engage/disengage would be frightening. (Which is why I always imagined Hockey skins for the 3 of them.. seriously Thresh could be a goal keeper- his ultimate could be the 'goals'..and he'd be all padded up lol. Hey.. Jax has one. Mundo, Thresh, Azir, Ekko, and Kalista would make awesome hockey players imo. Haha Mundo would be in the penalty box) I digress...

But- I do have one problem with Thresh. And, I'm not sure if this was ever addressed- but, when Thresh roams he alerts enemies as soon as souls begin to spawn. Given Thresh's kit, this cripples his ability for a nice engage. Where as a Blitzcrank can sit in mid river brush, and wait for the right moment to pull and pop the weakened enemy Mid. Same for Nautilus. Thresh isn't so lucky. You have to get there at the right time ever time, unless you just plan on scaring your enemy to their turret.