I'd probably choose the 2nd proposal, if it were up to me. Bringing back the Hart House pond is a must.
Can someone provide some context to this comment? The only Hart House pond I've ever heard of before now is the one at Hart House farms (a property owned by UofT http://harthouse.ca/wp-content/gallery/farm/farm_sm_2007_13.jpg)
The skating halo in the Janet Rosenberg proposal is an interesting idea, although I'm skeptical that it's a realistic idea. I like the DTAH + MVVH proposal the most, although I do really like the pond of the Public Work proposal.