In reply to Crazy Climber:
Hi Crazy Climber.
I'll take you up on this:
"But there are so many tors out there that are either not climbed, or are covered in moss etc and no one would want to climb. So, why not develop some of these..."
You started off talking about quarries, then you mentioned tors, which is it to be? I'm splitting hairs a little, but generally speaking 'tors' are the natural outcrops on top of the moor, whereas quarries are, well quarries.
You are incorrect in there being moorland tors of climbable length that "no one would want to climb on", because I want to climb on all of them. I'm not being facetious, I really do and have climbed on a great deal of them that you might think are neglected as have many others.
Please do not climb on ANY of the Dartmoor tors with axes.
As for the quarries, you'd be surprised at the number of the quarries that do have established trad routes in them, so which quarries are you referring to exactly? There are also a few quarries without established trad routes in them, but that people definitely have their eyes on. Personally I wouldn't have a problem in certain shitty quarries, but it's not up to me and you'd need to check there's no existing routes first and presumably contact the BMC + landowner etc.
Don't take this the wrong way, I'm not being elitist as I myself am shit, but given that you a clearly a bit unfamiliar with the area (not knowing about Haytor etc), but are presumably local and obviously a climber, then no being rude but might want to ask yourself whether you're actually any good with a pair of axes and whether you really think you have the ability to dry tool anything without damaging the rock significantly.
If you are good, I suggest a better idea all round would be for you to follow Jamie Bankhead's lead from that photo and just wait in hope that something has ice down it this year. There has on occasion been ice routes on Haytor and Holwell Torand I expect stuff could form in Swell Tor and Foggintor after a wet summer and possibly the odd waterfall here and there. Also there are a few turfy routes around too.
Either way, you're not going to find a great deal of people in favour of dry tooling the moor.
Good luck, HTH.
Tom