I think a lot of guys share you sense of comfort with the tom located as you have it on that set. Those of us who were exposed to the rather far left position associated with earlier drums sets got used to it. How you hold the sticks has some bearing on it too. If you use a traditional grip, it's not that bad having the tom on the far left. If you use matched grip, I think it is more comfortable to use the tom as you have it. I find it takes me a little time to get used to the Celebrity or Cozy Cole type layouts when I haven't used them for a while. The mounted tom really is out there on the left. Most of the time I use a Headliner or Citadel layout and I have no problem with those. There are early Gretsch kits with the rail way down on the left side that I find that quite uncomfortable. A lot of guys started out with double toms on mounts like the Rogers unit that was on your set, or the Ludwig double mount or whatever, and find it quite comfortable to use that even with a 4-piece setup. So the arrangement you have is one that a lot of drummers would be more comfortable using than the Headliner, Swingtime, Celebrity, Cozy or Starlighter arrangements.
Mike/Dan!
Might I chime in here? Regarding the Rogers OEM single rack tom mount position:
Certainly valid points Dan/Mike!, but... after around 1975 I had all contemporary setups too, and with the more modern approach to mounting rack toms, ie: more centrally located on the bass drum. Then, the vintage bug bit... and badly at that... not that I'm complainin' of course! Anyway, I wanted the complete experience of the "vintage vibe", so I play all my BR sets with the mounts as they were originally. I play match grip 85% of the time, with my point being: All I do is sit at a slight angle to the right.. and I mean very slight .. but just enough where the rack tom is still in perfect position, even with match grip. In the 3rd pic you can see the throne just over slightly to the right... just a taste. Dan is also correct in that after a bit, it becomes your norm, and there aren't any problems anyway! In my case, ALL my sets are BR models/configurations, and again, I wanted to leave everything as it was... for the total experience/vibe. As always, this is a completely subjective discussion!, and there is no right or wrong. I'm just sayin' you CAN keep everything at it was, and still be comfortable, if that's what you want! Here are a couple/few pics that show my set in the "as is" Buddy configuration.
Tommyp