I used 32-bit textures exclusively for years before I retired from paining planes. They are far superior to DXT files, because they're sharper to begin with, and especially because they don't deteriorate a little bit each time you open and close them, like DXT files do.
There's only one thing you have to watch out for. The files are relatively big, so if you have a plane with a complex model file and a gazillion texture files, and you have a slow computer, you might sometimes find that the textures load slowly enough that you can catch a brief glimpse of the untextured model when you first go to Spot view.
One solution, which will reduce the processing load on all computers, not just slow ones, is to only make the main external textures 32-bit, and leave the rest in DXT or even 256-colors.
Better solution: get a faster computer!
I always painted for myself, and while I was always happy to share my work with those who shared their work with me, I never felt compelled to use lower quality textures or go out of my in any other manner just to accommodate those who didn't have decent computers. My own rig was nothing special, so if something worked on my system, I figured that must be good enough for the vast majority of simmers, and certainly for those who were into the hobby enough to make stuff that they shared - and those were the only ones I cared about.
As it happened, I only ever ran into a handful of planes that had such complexity or so many textures that 32-bit files presented an issue. I'm sure that those with better systems - which is probably most simmers - would have even fewer issues.