I don't know... it could be that the entire point all along has been that Rip is destined to be a disastrous failure, in which case they've been hammering it home quite successfully with each episode!
Well lets see - he is supposed to save the timestream yet his team has killed / injured countless people in the past (and future). That should have changed his future a lot - people that wouldn't have been born or in the hospital or arrested that weren't originally and therefore their future is changed.
And also that Russian scientist lady blowed herself and her lab up real good to recreate the Firestorm, which they only knew about because the heroes got seen in the past fighting Savage.
Oh and getting Savage to release that virus 5 years earlier then it happened because he interfered with Per Degaton as a kid. That alone should be a huge change in the timeline - people dying 5 years before they originally did. Who knows how many children were not born because of that, or people who died then who may not have died in the regular timeline because they might have been away when the virus hit 5 years later in the original timeline.
So in a way Rip is doing a worse job than if he just left everything alone. If I was the Time Masters I would lock him up too.