I was posting like that because I was on my phone, but now I'm on my computer. For some reason my phone doesn't allow my to reply w/ quotes.
I just don't see how it would help much if the Leaf elders were told. They wouldn't tell Tsunade. Danzo had Root gather tons of info and yet Tsunade didn't know a single thing about what they knew.
If they are astral projections, doesn't that make it even harder for Itachi then? He would have to locate them before killing them. Also, I'm pretty sure that they would know who killed them. Zetsu informed the Akatsuki that Deidara had commited suicide, but he was no where near the area when it happened.