I don't doubt Tony's assessment of tools, but I'm not as down on Beavers' as this thread seems to be. Remember, he was always the guy who had the physical stature but hadn't gotten to his power yet. It was always supposed to be the last tool to come.
I also don't want to over react to small sample sizes here. Beavers is in AA for the first time this year. Yes, numbers tend to go up there, but it's also been April/May weather, first time in the league, etc etc.
With all of that said, he has 3 HR and 5 2B in 25 games. Over 150 game season, that's 18 HR and 30 2B. That's his pace while playing his first games in AA in relatively cold weather.
If he can turn into that type of hitter at the ML level and play plus defense at the corners, he'll be a very valuable player. That's not easy to do, and the profile is different from the power potential that all of Cowser, Kjerstad and Stowers have, but it's still useful, and there's still time for more power to come through.