Seems as out of all the sites that the city of Oakland presented on Thursday, this site...
...which is maybe a 1/2 mile away south from JLS is the most likely site that if a park is ever built in Oakland would be at.
This was a site ML posted months ago on his blog. Probably scenery wise, it's the most visually appealing. You'd get a view of the estuary, don't know if there would be a "cove" beyond the RF wall like there is one across the bay where a HR could land in the water. Two other parks, PIT's PNC and CIN's GABP also have water beyond their RF walls although PIT is the only one of the two along with SF's that you can actually hit the ball into the water with CIN's being too far.
Others in the park would get a view of Lake Merritt, Lake Merritt high rises, and the Oakland Hill.
BART is many blocks away and would be maybe a 5-10 minute walk. But with the park being right next to the train tracks, fans could come and go by AMTRAK and I'd guess there would be some kind of water entrance to the west of the park.
So it'd be a combo of AT&T/PNC/GABP in terms of being near the water and in terms of "audio", be similar to Safeco with the trains passing by thru out the day.
I don't think it's gonna happen, IMO Wolff is dead set on SJ but like I said in a previous post, building a park at that spot near the estuary would be more visually appealing than it would be to build a park in downtown SJ next to the tank, although in term of $$$$$$$, SJ definitely has the edge.