This chapter was boring. Nothing really happened and because it's bi-weekly, the pacing is a big problem.
The other big problem is like you said, the enemies are not a threat (anymore). Natsu is fighting them in his base form the whole time.
When Wed was in his human form he gave Erza a better fight than yet in his "dragon" form.
Not only the fights and the pacing are bad but what also sucks, Natsu and Weds confrontation. They are uncle and nephew and so far it's really boring.
Back in the old days of FT Mashima would have made such a confrontation much better with more emotions and hype. Now he potrays it so fucking boring.
Where is the reason that Wed is Ignias son if Natsu doesn't even give a fuck about that?
Gajeel vs Zero
I remember the time where he was a rival of Natsu, both of them had dual mode, both fought against Sting and Rogue both fought against members of the 9DG. Now it feels like that Gajeel is 5 lvls under Natsu....he struggles against Zero...and got one shotted from God Serena.
Diabolos
Where the hell are they? This arc is an arc full of dragons and Mashima is not using them for the fight?
The only good things so far are that the fights are longer, at least against the demons and that Mashima plans something for 200. At least it seems so.
I think he changed his plans with F&F and will make them new alies who will help them against the final enemy/enemies?
especially after we fought dragon gods
Beside the DG all new enemies in the 100YQ are so boring and the last few chapters confirmed it that the S12 are still the strongest and better enemy group is so far. The 3 members of the S12 who appeared in the 100YQ proved it (Brandish, God Serena and Irene).