Love the new GF changes but ...
His power is still fully countered by detection perks. You can so is every other stealth killer but there is a catch.
Every other stealth killer has some other benefit from their power. Wraith gets slight map control + speed burst, piggy has traps and dash attack, michael can instadown. GF's all benefits come directly from his Night shround and one perk shouldn't disable 100% of killers power (old trapper's traps vs sabotage for example) so he needs to have immunity to detection perks while it's active.
I think that this is his last main problem and that it's a very needed change so please give GF detection perks immunity while Night shroud is active like Michael's tier 1 has.