If you want a comparison on the multiplayer aspect, look at ME3 multiplayer compared to Dragon Age inquisition multiplayer. Made by the same studio and follows a similar format but you can definitely feel the difference in quality's and effort. The talent drain has only gotten worse since then in major gaming studios.

I really doubt they have the talent to pull it off, I'll be happy if they do but in perspective, can anyone name the last franchise game that had a sequel as good as the predecessor as I can only think of Doom Eternal as the last one.