Had to quit Supergirl halfway through. The hit(mis)-list:
1) They aren't allowed to say "Superman." So they avoid it at all costs...constantly. Supergirl uses his proper name, and everyone else says things like "Are you like....Him..." and Jimmy Olson shrugs and says stuff like "I think I'll ask my buddy in the suit."
2) The DC universe's version of SHIELD is not only front and center...Supergirl is basically working with them. Her sister is an agent. They've spent ten years hunting the rogue prison ship that disgorged hundreds of insane Kryptonian criminals on Earth who are -- JUST NOW!! -- coming out of hiding to prepare the way for "the general."
3) The "Supergirl" name comes about largely thanks to twitter, which leads to a lengthy scene where Supergirl rants about feminism to a less than amused Calista Flockhart.
4) Calista Flockhart is weird-looking, unlikable, and can't seem to walk in a straight line or stand without wobbling/leaning on something.
5) Supergirl desperately reveals herself to the big mouth idiot guy instead of Jimmy Olsen so she can have a human sidekick who can...be the standard human sidekick from every superhero movie. Jimmy is a love interest. They fall in love at first sight.