I don't think X has looked bad the last few games. He's already a good, aggressive defender, averaging 3.5 steals per 40. And he's been a good, aggressive passer, with a nearly 2:1 assist ratio. He's looked "bad" in the sense his threes haven't fallen and he hasn't been aggressive elsewhere -- he's only shot 11 2s all year. He might be "limited" offensively because of his height and lack of elite shooting, but if he was shooting 5-13 instead of 3-13 on threes, he'd be shooting 38%. Coming in to play 3 minute shifts as a freshman PG isn't ideal. It's far too early to make any grand statements, especially with his production in high school and AAU.
That said, I wouldn't assume this is his team the next three years. Eli may have something to say about it.
And I'm a big fan of having X, Eli, and DeJulius in consecutive classes. Lots of options for different looks and multi-PG lineups, with depth in case of injury.