Yeah I agree. I've developed a big mistrust for slow burn fics because of the 'getting together at the very last minute' endings. One fic I had read had loads of cliffhangers at the end of every other chapter that was driving me up the wall between updates - and when the pair finally got together 40 chapters later, they just held hands and the fic ended right there with a filmsy 'who knows what tomorrow brings!'
I have always promised myself to never flame fics like preteen me did in the early 2000s on ffnet - but my god I was so very close to writing the rant of a lifetime at the end of that one.