Who would you rather take instead? I know it's a quite a bit off, and there's a lot of games left to be played for him, but the only better player right now is McCutchen, and as much as I love Cutch, I think this is a career year for him. I don't know where else he can improve. Sky's the limit with Trout imo.
In the 68 games he's played in this season, he's put up: .348/61/12/42/30..
They've got 72 games left. If he would play in another 68 games the rest of the year, and you double his statistics, you've got:
That's probably good enough right there to make him the #1 player, and that would be in 136 games played. He's 20 years old, and he's dominating in almost every aspect of the game. Yes, he's likely going to go through a slump at some point during the next 2+ months, so he likely won't end up with that stat line, or anything that close to it, and the BA may come down a bit. But he's taken 27 walks compared to 60 strikeouts, so he's shown discipline at the plate, and the OBP is over .400. He'll probably sit out a few here and there, but for argument's sake let's say he does what he is now over a 162 game season and you end up with..
Normally, I wouldn't extrapolate statistics like that, and it's hard to predict what Trout can and will do given a small sample size.. But given he's 20 years old, he's obviously going to improve over the next few years, and the question becomes how much?