Yeah, the appeal of making shapeshifters the main threat in your spy thriller is induce paranoia on who's human and who's the imposter setting everything up. This show never puts you in that mindset, every skrull is either obvious or nobody that matters (especially when, apart from Fury and Rhodey, none of the characters are anyone that mean much to us in terms of the MCU. I legit forgot the MCU even had Mariah Hill until this show). The comic event was pretty shoddy, but at least revealing some of the heroes to be Skrulls had some legit weight to it and they actually tried to make you wonder who's the genuine article, especially when they introduce how some Skrulls didn't even know they were Skrulls.