For Gray’s mission in the words of someone else:Erza’s reason for not including Juvia in the plan makes perfect sense, actually.     
In undercover missions, it IS a safer move to not include more people than absolutely necessary. If you have more people than you need, the chances of screwing up go up.    
And, I hate to say it, but yes, Juvia does get very protective of Gray at times. So if they ran into a situation where she thought he was in trouble, she could have gone against the plan in some way and gotten them all busted. In fact, \*Anyone\* involved could have exposed them if they had more hands on than absolutely necessary, not just Juvia. And, that DID happen, thanks to Natsu, Lucy and Happy. So, it’s also not a good, or fair argument to accuse the characters or any fans of targeting her specifically.     
And, knowing Gray for as long as she has, Erza obviously chose to include him over anyone else for a reason (I really hate to bring that anime-only Daphne arc up here, but… look at that. Double agent Gray.) She trusts him, and believed he could get the job done.     
And, it’s not like she didn’t feel bad for leaving Juvia in the dark about it. But she felt it was best, for whatever reason.    
So, please do not demonize Erza and Gray for not including Juvia in on their little plot. They did it to keep her, and themselves, safe. 

I hate to admit but this is all fact which is why hate undercover stuff it and because it tends to be problematic. Although I wonder how Gray and Erza would take if home how Juvia died because of their mission.

As for the rest of the Arc the fight with AVATAR was good afterwards i just think it could have done a lot better then it was and i get that friends and family lost touch with each other after a time while being scared and unsure(after Fairy Tail disbanding)but it just doesn’t make sense when Fairy Tail prided themselves about Friends and Family and talked about it a lot. This is just my opinion/thought though. Anyone here feel free to give your thoughts/opinions

[Discussion] Please give me your honest opinions/thoughts on the AVATAR Arc or Gray’s undercover mission.