The B101 program should not support gimmick metagames. This includes NU, LC, CAP, etc. It's a complete waste of resources.
Just the same, I don't think it should support dead metagames. This includes DPP UU and DPP Ubers. DPP UU is only used in SPL, and it will be phased out after BW UU launches. DPP Ubers has no competitive use anymore. (For the record I'm not against BW UU and BW Ubers tutoring)
I'm not in favor of RBY and GSC tutoring. I can say with confidence that RBY does not require a tutor to learn (read up on mechanics, play 3-4 matches, and you'll pretty much know the ropes). GSC is an aquired taste which I can imagine would make it difficult to tutor/learn, added to the fact that GSC is a "dead" metagame, but beyond that I don't have any real argument against it :x
I'm conflicted about VGC tutoring; with a lot less viable options tutors would either have to demonstrate with their own crafted teams (in turn ruining much of the value of the team), which can simply lead to the copying the team out of lack of better options, or the tutor might hold back and fail to tutor properly. I guess my point is there's not much flexibility with VGC. But on the other hand I recognize it as a legitimate metagame, so if it could be managed properly I'd be behind.
My 8 cents.
EDIT: When I say waste of resources I exclusively mean within B101. I understand that tutors are volunteers, and nothing's stopping somebody from volunteering to tutor for NU/LC/whatever, but I don't think it should be managed or supported by the B101 program. Tutors for such metagames are a lot more scarce than popular metagames like OU, and OU tutors are already in short supply. I think it's safe to assume that LC players are also versed in other metagames, making them capable of tutoring for those instead (example: SDS). Because the program is already stretched to capactity, why should B101 put SDS forward to tutoring LC when there's a higher demand for OU? That's what I mean when I say waste of resources.
I don't think exclusive LC/metagame X tutors are a good thing either for two reasons: 1) as mentioned they'll be in short supply and with official signups in queue, it would become backlogged much more than any other tier, and 2) honestly I would doubt somebody's ability to tutor properly if they're only capable of playing one (arguably) insignificant metagame (and if they can play others, I believe they should be encouraged to tutor those, which is done by not supporting the metagame to begin with). 2 isn't up to me though.