Kremer is a former 14th round pick who's thrown less than 40 innings above AA, and I don't think he's made any top 100 prospect lists. Although he has potential he's not an established MLB starter yet.
Akin has 25 MLB innings, had a 4.73 ERA last year in Norfolk, and has less than 400 professional innings on his resume. He is not an established MLB starter yet. I like his strikeout rate, although he does not throw particularly hard.
The Orioles have a lot more potential and optimism than they do fully- (or even mostly-) formed pitchers.
In his defense Sisco gets hit better than the typical catcher (6 HBP in 121 PA). Actually collecting HBP is one of Sisco's tools, he's averaging 26 per 162 games, for reference Biggio (#2 all time) only averaged 16.
The rankings appear to be based on ceiling without much consideration for the likelihood of getting there. Meaning that the average grade across all MLB would be something like a B+. Most teams have someone at each position who could, potentially, be a good MLB player if everything worked out in their favor.
A name to keep an eye on for pitching coach is Brent Strom with the Astros. I don’t know what his contract situation is, but he has strong ties to Elias, Sig, and Chris Holt from Houston, and even going back further to St. Louis with Elias & Sig. Now that there is a new regime in Houston, Strom would likely be interested in coming to Baltimore to reunite with the people he knows best and are completely aligned with his pitching philosophy. That all depends on his contract situation though. I’m going to see if I can find out when Strom’s contract expires with the Astros, because if it’s up at the end of this year, I would not be surprised at all if he’s our next pitching coach. Holt’s pitching philosophy was learned from Strom, and Holt is known to have named him The Stromfather (as a play on The Godfather) and had t-shirts created with The Stromfather and Strom’s face on it that was given to all the pitchers in the Astros system. If we were able to bring Strom to Baltimore, that would be a huge pickup for our pitching staff (and pitching program throughout the system), and I can’t imagine Elias & Hyde would let Brocail go without having a replacement in mind.