Peter, yes I can see what your saying but actually as 99% of LF work is tripod based I prefer to actually go down the slowest film available route.
I say that but in reality I've also had to start using 5x4 hand-held, but where I live there's no LF C41 processing, the nearest lab's about 6 hrs drive so even if LF XP-2 was available it wouldn't be practical.
Modern conventional films like Tmax 100 & 400, Delta 100, APX100 are so good and in practice I prefer the tonality they give compared to XP1/2. I also use EFKE PL25, Forte 200 and Fomapan 200.
Unfortunately I have to provide both colour & B&W images when I'm commissioned to shoot concerts, and the high speed push process E-6 films are long gone, and unfortunately the client wants everything as a digital image anyway. At that I'd best stop as I'm still technical advisor to the company, and overea these areas.
But I'm actually saying I couldn't use LF XP2 Super even if it was available
Ian