Looking over the shadowbringer changes, I'm sad that summoner will no longer be a pet class. That was the main reason I picked it. The pets are now all just glorified buffs. That makes some amount of sense from how they're typically used in most groups, and for the wind and fire pets it won't really be missed. However the earth egi/topaz carbuncle is very different. This pet combined with sustain is central to how solo-play works.
Brave little topaz carbuncle even raid-tanked yesterday when our normal tank went linkdead but the other alliances didn't want to wait:
The new earth-egi is probably fine for general group play, but I really hope they consider adding back a solo-oriented tank pet (perhaps as a 4th pet if they want to keep this one for group stuff). I don't feel like a 20% shield will come anywhere close to making up for the loss of not having to face-tank stuff solo. "Maybe" if they fix Physick it'll be ok.. but nobody knows whether that's happening.