It does make sense they'd want to destroy the dome on the rock like you say, but they wouldn't want to destroy the land or surrounding buildings. So I could see a truck-bomb like the OKC bombing destroying it I guess, but I'm sure Palestine has been prepared for that possibility for decades at least. Also a regular non-nuclear missile would probably accomplish their task as well. I could see Israel shooting it from Iran or Iraq and then blaming it on ISIS or Iran. Then claiming in the media that Iran or ISIS bought it on the black market, stole it, etc.

Then immediately after it happens, Israel would move in to "secure the area" and make sure "everyone is safe" and in the process claim the top of Mt. Zion.

I could see that happening. I'm sure there have been hundreds of plans along these lines that have been thought through by high-level Zionist thinktanks. It creeps me out, but I think being aware of these things makes them less likely to happen. Much harder to pull the wool over people's eyes when they see it coming. You can't trick people if they know how the trick works. Because it's obvious the zionists are very powerful, and it's obvious they want mt. zion and the removal of dome on the rock, and it's obvious they want to overthrow Iran and Syria. This theory accomplishes all three, so it seems like something worth watching out for as a potentiality.