For the record, I am moderately happy with Pace so far. But, I take partial issue with this wait & see mentality, and the same holds true for evaluating draft picks. The old-school or conventional notion is that it takes 3 years to asses the effectiveness of a draft pick or GM. I call bullshit.
While you have a larger body of evidence with the ensuing passage of time and can make a "more" informed assessment, that doesn't mean the GP/HC/draft pick can't be evaluated at each and every stage.. For example, Fangio - he's pretty good, right? We can all agree on that, but under the conventional notion we should defer passing judgment until the conclusion of year 3.
The Homers are quite selective, when a player/coach/GM makes a good early impression we begin to crown their asses. When a player/coach/GM takes any missteps early on the response is that it's too early to judge, lol.
Look, you can tell in the first year if a draftee is a player or not. Some will improve and surprise, and others will falter from their initial impression, but the principle applies to all - evaluate early, often, and continuously.