As a Touring owner who wishes they had a GT (wouldn't say no to a DE-P, GT-P, or Sapphire either

), I'll share what I feel like I'm missing with the Touring, and if none of those matter to you then maybe it's the better option over the GT.
-Range. As someone who does a lot of road trips and spirited driving, the extra battery capacity would be really nice to have. Not to say that the range on my car is insufficient, but there are times I wish I could go farther without stopping, especially when I'm driving "inefficiently".
-Fast charging performance. While still not class leading, charging performance for the GT is significantly better than the Touring. My charging curve almost mirrors that of a Tesla Model 3, which is not impressive.
-Seats. I REALLY wish I had the 20-way massaging seats. As you mentioned the additional bolster adjustments are really nice, and Lucid’s massaging seats are the best I've tried so far.
-Interior materials. This will be subjective, but for reference I have the extended Mojave interior. In my car there is additional leather on the dash and door cards instead of the Alcantra that's in the GT or the fabric that's in the Purluxe version. I actually really love the fabric of the Purluxe over the other two, but the Alcantra in the GT is still really nice.
-If this isn't a car you'll be driving quickly, then the differences in power shouldn't matter much, but I will say Smooth mode in the 2025 GT I recently drove feels like Sprint mode in my car.
-The only other major difference would be the footwells for the rear seats. Having the extra depth does make it more comfortable. I almost never have rear passengers in my car, but if you do often then that's something to consider.
Hopefully this helps!