I really want it, but Insomniac says we need to bug Sony to get it.
http://www.gamesthirst.com/2011/06/25/insomniac-games-responds-to-fans-calling-for-ratchet-and-clank-hd-collections/
So I have created a thread on the Playstation forums to try and get their attention. Post there and here if you're with me.
http://community.us.playstation.com/message/31152561#31152561
Edit: Post on Sony's forum (link above) if you want to see this happen.