They really cheaped out on Subterrania and the Mole Men. The Mole People were literally just a bunch of hobos wearing hard hats. They looked like average schlubs. They basically made it into the underground rebel group from Demolition Man.
I enjoyed Paul Walter Hauser in his limited screen time, and he was funny but like...there was nothing for him to do. You didn't even really need Mole Man in the movie. Could've just evacuated the city elsewhere. Hauser is an award-winning actor and a rising star right now, and Marvel Studios does this a lot. They cast big-name talent and do very little with them or cast them in throwaway roles.
Like Emilia Clarke in Secret Invasion. She's Emilia Clarke. She's literally Daenerys of Game of Thrones. Why are you casting her as a f'n no-name Skrull character? If you're going to cast her as a like Princess Anelle. Make her the figurehead of the rebellion.