In the "upcoming" taming very short description, there is no mention of getting pets to fight/guard you. There should be an option to make your pet fight, possibly either with a minimum taming level or another skill that allows pets to fight/protect for you (like in Ultima Online). If adding another skill or even using taming each level(s) increase could add more pet attacks or simply add more damage to them.
If we are just going to have taming to show off pets/get mounts, I don't believe it will be that great.
I don't know how long I have been playing other than when the game was first released, there is no /played!