Will be interesting to see what these are worth once the TAG Heuer version gets released too.
Yes, that would be interesting to see. They'd likely drop upon the TAG branded version's initial release, but long term the value result for the KITH models may not be that affected. Things could even out or might surprisingly go in KITH's favor.
In the Esquire article, Nicholas implies their factory isn't setup to pump out huge volumes like a Swatch or late 80's TAG. Thus, most likely a TAG branded reissue will remain priced the same and will be similarly limited in production if not an outright LE. If they did ramp up their factory to accommodate larger volumes at a lower price, the KITH F1s would likely retain a higher value as being more limited & exclusive.
If a TAG Heuer branded reissue is identical in looks, it'll be even harder for the average joe to see the difference between an original & reissue. Hence making the $1500 price even more debatable and providing greater incentive for those who own neither to go for an original. OTOH, the KITH Heuer branding, regardless of being unpopular by the old guard, makes them unique.
Also, we don't know the split of how many current KITH F1 buyers are old gen nostalgia types vs. new gen hooked on anything KITH branded. The TH boutiques' demo only gives half the picture. It could be a wash. Longer term, the KITH F1s could be viewed as more unique and hence more collectable by the younger gen.
As a wildcard, it might simply come down to color preference. Surely TAG will not repeat the same colorways used on the KITH models.
For me personally, my only interest in these is as a collector. My yellow & gray F1 original is the very first watch I bought with my own money. But as I already bought the KITH, I'd only buy another one if reissued in yellow & gray. Even then, I'm not sure if I would, since it can't replace my original in terms of sentimental meaning.