What position does "we" play?
They're great statistical wins now, but statistical wins are hollow things, especially when characterized by excessive turnovers and most of the offensive production being confined to one or two Players.
IU's defense is solid enough to be nearly top 20 nationally per Kenpom and seems to improve within the course of Games. Well and good but all the defense in the world won't get anyone to the next game without scoring - sort of the Crean Syndrome in reverse with TOs so far being pretty much a constant.
The boilers have the #8 ranked offense in the country and are 6-5 - they look good statistically because their stats are skewed by an inordinate level of production and efficiency coming from one player, not unlike IU against Butler where Juwan scored almost half the points and singlehandedly raised IU's shooting percentage from under 40% up to 52%. He also scored all of IU's points in free throws save for one by going 7-7 leading to a misleading 80% figure for FT efficiency. If "y'all" imagine that this is the stuff of long-term success and deep runs in tournaments, then you do, but it's extremely sketchy at best and won't be remotely sufficient to consistently and reliably beat better teams having similarly able defense AND balanced scoring.
Defense is not "a near impossible thing to teach a team". Lots of teams do it better (MI, PSU & WI) or nearly as well (NW, MD, MSU, OSU) in the B10 alone. Am thrilled IU is on the cusp of having an elite defense, but no one could have watched yesterday's game objectively and not be concerned about the way IU regularly struggles on offense. They start flat, half the Players in the rotation are borderline non-factors offensively on any given night, and so far they're just barely doing enough to win on the basis of pure athleticism, and not because the Team has a polished and efficient offense. Neither statistics nor the eye test refute that no matter what you believe.
This is all to say that IU and Miller have a lot of work to do, and most of it on offense. Much as one might favor establishing good defense first, or be satisfied by IU's 9-2 record, that doesn't obscure the reality that this Team's offense is still very much a work in progress. The silver lining is that athletically IU has a very high ceiling on offense - Juwan may already be at or near the top of his game if his 3-pt. accuracy holds up, but the rest of the group isn't anywhere close to being as good individually or collectively on offense as they are on defense. Whether it's Romeo, Justin, Rob, Devonte, Evan. Aljami, De'Ron or Zach, they all have room to get a lot better, and particularly if whatever schemes Archie is teaching are as robust as his defensive lessons/acumen.