Problems- spoilers

Ok so I loved season 1 of this show and I actually really enjoyed season 2 as well. But season 3 was pretty awful. The best part about this show was the character development, and that was completely lost in season 3. I really would have liked for at least one thing to have worked out for Roman and Peter, just one. But that of course didn't happen. Their friendship was such a huge part of this show and within one episode it completely doesn't matter anymore.
The Shelly storyline was also extremely boring and flat, the character of Shelly is flat and uninteresting. However, with better writing they could have done a lot more with this character. Olivia is also sort of annoying in this season, the whole entire season she was focused on one thing. they could have went a completely different direction with her illness or whatever, which doesn't make complete sense anyways.
Overall season 1 was a fantastic and semi-original show with great character development and plot. Season 2 was also interesting until the last few episodes. But they completely ruined it with season 3.

What I would have liked to have seen is Roman and Peter really team up to take out speevak. A complete overhaul of Olivia's storyline. And maybe a slightly better ending where Peter and Roman somehow remained friends. The whole part where Roman kills destiny is rediculous.