My vote would be Yes, it would be useful to do the 1.5Hz resolution, for a few reasons:
1. Looks more similar to Amir's data. I think the more similar the data looks for speakers that both of y'all measure, the more trustworthy both of your measurements become in the eyes of many.
2. Better for more complex speakers. The R3 is a pretty straightforward speaker to measure with no high Q dips or peaks. I think
@napilopez did a great job showing that the difference is pretty meaningless here, but what happens with a speaker like the 705p that has a really severe yet high Q dip? Will the lower resolution hide that a bit? What about a more complex port/woofer situation like the F328Be or Salon2?
3. More future proof. My life experience so far has taught me that extra data is often a great thing to have for the purposes of futureproofing your work. "Too much" data today is a better problem to have than "too little" data 5 to 10 years from now. Who knows, 10 years from now, maybe we'll have machine learning algorithms reading this NFS data that you guys are making now, and the higher the resolution is, the more accurate the machine's predictions will be. This is definitely speculation on my part, but I'm trying to think outside the box
. As an analogue, the due to the nature of film data, we can now see 4k Ultra HD bluray versions of films made in the 60s, which no one in the 60s had a 4k tv at home to appreciate.
Kinda related to 2 and 3, but higher resolution graphs for easy speakers like this now will also be more comparable to future graphs in the event that you have to increase resolution to capture a more complex speaker. Amir's already had up the resolution to higher than what he did for the R3 on at least a couple speakers to keep the error low and fully capture the bass(F328Be, LRS). Those reviews look slightly different than his other reviews because of that.
Ultimately, it's your decision, and your extra time, so do what you think is best. If you're measuring several speakers a day, I could see why 2hrs vs 4hrs could be a big deal, but if it's 1/day or 1 every other day or something, I would think there's very little to no opportunity cost; especially given that it's automated and you don't have to be there.