Titan is a "tank" type pet, so is inherently only useful when you don't have a real tank. They aren't going to change him.

The Devs have said they will give us Egi-glamour options instead of new Egis. They've been working on that for an awfully long time and recently gave us the Carbuncle Egi glamours. We may eventually see Ramuh or other options as Egi glamours, but they will not be new pets with unique abilities.