Yeah, I kind of liked last and thought it might be pretty fast paced, but I didn't play in that pug, just idly spec'd it so I can't say for sure and I know that several people specifically said that last was too hard to defend. It also looked like once they started pushing last with kritz and Stalin started using buff banner, it was really effective and I don't think they failed a last point after that point or even lost a round.
Also, I don't think any team effectively pushed out of last, there were attempts but I'm not sure any one ever got to mid or even second off a last push and most of those attempts were in like the first couple rounds and in the first couple rounds, everyone is still trying to figure out the map so you can get away with some more stuff.