The Buffalo Bills have had a steady stream of abject failures at QB interspersed with a few decent veteran stopgaps at the position and have been lost in the woods at QB since their last true #1 retired in the early 90s.
In 2018 after the latest reclamation project fizzled out, they traded up to pick Josh Allen at 7th overall. He's 6'5 240 and had generational freak-of-nature arm strength on draft day, and was seen as an effective running QB as well. The raw tools were absolutely off-the-charts impressive, and he had all the intangibles/personality characteristics you'd want in a star QB. However, he played in a mediocre college conference, put up mediocre stats, and had very poor throwing accuracy. Imagine if Slafkovsky had put up 45 points in 60 games in Junior A and was routinely flubbing breakout passes at that level yet still showing highlight reel flashes that convinced a team to take him in the top 10. It was widely seen as a desperate pick by a team dreaming on tools instead of making the safer choice to fill a team need with a less flashy player, and the conventional wisdom is/was that things like arm accuracy, processing speed, and decision-making weren't something you can teach a QB in the NFL. Sound familiar?
For the first 2 years of his career, the running game translated and he had a few exciting highlights where he flashed the big arm, but he played very poorly overall. He was basically a punchline to NFL fans and media for finishing near the very bottom in completion percentage/accuracy, throwing a ton of interceptions, and showing all the huge glaring red flags from college were still red flags despite the tools. However, you could still see he was such a raw player that left a glimmer of hope he could figure things out as there were still a lot of obvious technical deficiencies to fix, and the intangibles/personality really shone through with how he ran the ball aggressively and didn't shy away from contact. Then in his third season everything clicked and he broke out. He figured out the footwork, the team added an elite #1 receiver to support him, and Allen jumped from the bottom of the barrel to the top 5 in passing TDs, passing yards, and completion percentage, and was still in the top 3 in rushing TDs at QB. All the tools translated into a player that in his fifth season is now a freak of nature superstar widely considered to be the 1B to Mahomes with Mahomes/Allen in a tier of their own as the 2 best QBs in the NFL.
It's not an exact comparison, particularly as I certainly am not saying that Slafkovsky will have the same trajectory and break out as a superstar top 5 player in the league the way Allen has, but the parallels are pretty intriguing. Both are physical freaks that are/were still very raw in a ton of finer details but show eye popping flashes of skill despite a rocky initial adjustment to top level pro play. I think the intangibles side aligns well, there's a lot of comparisons between the two in terms of their confidence and at least hopefully their ability to handle a psycho local market and fanbase. Slafkovsky has the higher draft year production/floor projection than Allen did and is a fair bit more conventional, but there's a lot of parallels I see in terms of being ultra toolsy players that make/made a ton of easy mistakes early in their career and have a ton of room to grow because they're so raw.