I have to say so far this series has been amazing. It's lovely to have the Marvel intro back for a new project and even though this is very different from other things we have seen in the MCU I would still watch it! I'm only young and live in the UK so I've never actually watched a proper sitcom before but I still loved this. I can understand some prove not like the show but all I ask is to give it a try! SLIGHT SPOILERS COMING UP!!! The first episode basically sets the scene for what is to come for I would say the majority of the series with little creepy hints getting dropped in the something isn't right. In the second and third episodes is were things start to go wrong more often and I believe that as we go along in the series things are going to start to pick up for WandaVision and we will get a normal Marvel story that we've all grown to know and love.
Personally I believe if you think this series is bad because of the sitcom layout then I would say wait a few more episodes until you start to truly watch the series. I believe things will get more creepy and interesting as it goes along and I definitely think this is a great start for Marvel phase 4!