We’re only twelve games into the Astros’ season, so it's still too early to draw hard conclusions about this roster. Not even two weeks’ worth of games. I mean, Yordan Alvarez and Christian Walker will eventually hit better than they have at the start of the campaign. The lineup as a whole will start hitting again.
Whether this will be regarded as a “good” lineup is another question, however. Only Jose Altuve, Jake Meyers, and Brendan Rodgers have a wRC+ over 100, which is roughly league average. Altuve is the sole hitter on the team with a wRC+ exceeding 115 (166).