Before I got into the vintage part of drumming, I had a set where the toms and floor tom all flew from the Tama Starcast mounting system. I still think that they had the best system for improving resonance. Of course my vintage Gretsch didn't need more resonance, it just wouldn't sound the same.
That last comment alludes to something I hve heard many times and find quite interesting; the original "sound" of many vintage drums were part and parcel with the mounting systems used. That applies specifically to the mounting systems used for rack toms but can also apply to floor tom legs as well as mounting hardware and spur systems for bass drums.
I will concede that using the original hardware does allow the drums to sound as they did originally with the exception, of course, of available head styles. Many would say this is how the drums "should" sound as that is how they were "designed." Personally I disagree as I tend to think that vintage hardware was designed to simply mount a drum one way or another, often as cheaply and simply as possible. I prefer for drums to sound as open as possible. What they sound like when I tune them individually and hold them in the air is what I want from them when placed in the set. If that does not involve re-drilling the shells then I am all for it.
As to placement between multiple rack toms, that doesn't really bother me that much. I would seldom have mounts in between the drums anyway. I do understand that complaint however.