I actually really like the way that AoS has dealt with the movies for the last three years. Other than the big Hydra reveal in Season 1, the events of the movies are acknowledged but you don't need to go out and watch a movie just to finish watching the season of the television show. Now I did watch Winter Soldier before the final episodes of AoS but it wouldn't have changed the movie for me if I had watched the show first. The Hydra surprise just would have been in AoS rather than Winter Soldier.
I think it's been up and down. I agree with what you say to some extent, but there have also been moments (like the whole secret helicarrier thing) where the show went out of its way to set up some side storyline that 'tied in' to the movie, only to find out that it was all some random throwaway tie in that doesn't even affect the show at all. I mean, giving Coulson responsibility for providing the Helicarrier is great and all, but if it was going to have so little play in the show itself, then it should've been a much smaller deal, rather than that whole build up with May suspecting him of hiding things.