And then there is the issue that tighter slotting horns are usually also horns with more braces and/or weight added yielding fewer high overtones. Yes, the core remains, but the spectrum of the sound is lessened. Does that bother you? It does me.
Also, not everyone is as perceptive about tuning, so a tighter slotting horn can be a very good thing for those with less ability to tune themselves on the fly. Teaching those folks to use the appropriate slides and alternative fingerings can be invaluable.
For those of us who are primarily jazz players, and players of vintage horns, most of this is not as important. Tone being the number one desire and tuning next. Having a horn a little looser in slots allows for easy tuning on the fly and the freedom of expression. Plus vintage horns with their slightly different architecture results in none of the notes being completely right or completely wrong in tuning, with the understanding that the player will make the appropriate adjustments when needed. I'm so used to this that I never really think about using any slides if rings/hooks are even there.