Alcantara isn't having an amazing start to the season yet but he looks to be way more solid than he was last year. Thru 35 PAs thus far he's got a .250/.314/.406 triple slash and 8.6%/22.9% bb/k rates. The K rate is roughly identical to what he did in 2014 in AAA and his bb rate is up about 2%. His power numbers aren't quite there yet but that's kind of to be expected in the colder months and his BABIP is about 30-40 points off where I'd imagine he'd normally be(.330-.340 range is where he's been at lower levels).
Age and length of time at a level matter in player evaluation. Alcantra having good numbers and slugging .890 in AAA at age 22 with good speed numbers was massively encouraging and it's something that a 24 or 25 year old repeating AAA for the third time is frankly impossible of matching in terms of accomplishment. Alcantra came out of nowhere to be a 4A type player and that's not a bad thing. I just think when I watch him he lacks the ability to consistently adjust to pitchers. It seems like he came up, pitchers figured out how to get him out, and since that point in mid 2014, he's been unable in either AAA or MLB to consistently hit.
The downside here is nothing thus far is really screaming all-star that I thought he may eventually become at one point. The upside is he seems like he's corrected some of the issues he had last season. Keep in mind while the sample size is low he also hit .333/.419/.370 with something like a 12.9%/16.1% bb/k rate. I'd wager AAA and spring training are roughly similar in competition levels so that's close to 70 PAs. Generally you'd like 100 or so but I'm taking it as a good sign because I'm biased toward him.
I get the bias but even if you take Alcantra's small sample and say he's corrected, there's a clear difference between a guy who has a OPS of .890 in AAA and a guy who has a .789 OPS. Tommy LaStella had a OPS of .743 as a 24 y/o in AAA the last time he was a regular in AAA and he did that hitting one home run in 300+ PA. I don't even know what Alcantra's tool to the majors is beyond position versatility and speed. It's weird you champion his hit tool still when it's clear his path to the majors is speed+defense+versatility.
I haven't seen too much talk of what happened to him last year probably because there were simply better stories than a guy who may not even end up being a starter with the cubs. But I do wonder if he essentially had a similar struggle to the way Castro slumped when they tried to make him more selective taking pitches. I mean in his 2015 MLB stint he had a 15.6%/34.4% bb/k rate which would seem to suggest he wasn't identifying his pitch to hit and more or less just took as many pitches as he could. That carried over some to his AAA stint last year where he had a 7.0%/25.1% bb/k rate. So, seeing that K rate come down is always pleasant news. And while he's thus far not been "OMG WOW PROMOTE HIM NOW!" his 106 wRC+ is very respectable as is his .334 wOBA.
I don't know. As I've said I'm completely biased toward him but if this continues I really feel like he can be a very useful weapon in the playoffs. He's one of the few guys the cubs have who can steal 30 bases in a full season and the fact that he can switch hit and play multiple position would be very very nice to pair with Baez off the bench or to replace Baez if you move Baez into the starting line up.
He plays multiple positions but doesn't excel at any of them; his speed is a nice tool but it's again not an asset if he can't get himself on base. If he's a pinch runner, there are faster guys than him for that role. Everything with him is "back two/three years ago, he flashed X". Since then, he's simply regressed. You compare these players in ways that are just illogical. He can steal 30 bases? In what world can he do that hitting like sub .200? He stole 31 bases getting 570 PA hitting .270 as a AA player at age 21 four years ago; if Alcantra got enough PA to steal 30 bases in the MLB, the Cubs would suck.
Also for what it's worth, Almora is killing it in AAA thus far. .286/.393/.333 over 29 PAs and a 17.2%/13.8% bb/k rate. I might have been wrong about him. I figured he'd at least need most of this season to get thru AAA but at that pace he too might be ready for the majors by mid season.
The only thing intriguing thing about him is the walks but the sample is clearly too small to be a determining factor. The rest shows he's had a lot of singles get through and getting singles in AAA at a .280 level isn't a great sign that future MLB hitting ability is there.
The key thing to take away from both of these "reports" is that your idea of scouting numbers in AAA is horrible. A guy hitting .286 with .333 isn't showing a MLB hit tool; the walks would be nice but he'd literally have to translate that to the MLB to be even a bad hitter and the odds of that are slim to none. If Almora next year can hit in the nine hole and be a GG defender who hits .230/.290/.325, I'd probably take it. Kiermaier was a 5 win player hitting .263/.298./.420. Last year Alcedes Escobar was a 1.5 WAR SS with those kind of numbers. Simmons was a 3.2 WAR SS with slightly better numbers.
But nothing in Almora's hitting numbers suggest he's ready for a jump in class; hitting .286 in AAA while slugging .333 doesn't show a mastery of hitting like say Soler hitting .282 while slugging .610 or Bryant hitting .295 while slugging .619 or Baez hitting .324 while slugging .527 shows.