We need a Jazz, because he's Jazz, and a Galvatron to finish off the leaders.
That being said, I only half like the new MP look. I still wish figures had a bit of a metal finish. For example I think the flat grey on cartoon Wheeljack and the oddly coloured missile launcher look kinda bleh, but I do like the blue windows. Personally I don't know why they are trying so hard to replicate what was (let's be honest here...) a hastily made show with a pretty simple colour palette. I think guys like Sunstreaker are perfect. I don't need glossy metals, just some specular so they don't look so flat.