The Battle Droid looks a tiny bit short, but that screen cap is deceiving. Some of those Battle Droids are more in the foreground than some of the other characters, and that makes them look taller than those characters who are further from the camera. And naturally, the handmaidens are on the short side.
There is only one Battle Droid head that is close to a Naboo Royal Guard which might give a clear indication of the true height of the Battle Droids compared with an average adult male character. In that case it looks like the Battle Droid might be 3 - 4 inches taller than the Naboo guard. Based on that, I think the height issue with this new Battle Droid is negligible. And if you think that we're going to see ANOTHER Battle Droid resculpt within the next 2 years that would correct this height discrepancy, I think that may be an overly optimistic expectation.