with oda's recurring sickness and small gap from the anime I smell some fillers coming within the next 2-3 months
I don't see a way out to fillers until Dressrosa finishes. Not to mention, the gap will be reduced to 30 chapters next week.
Toei should have put the anime on a hiatus after the time-skip, but they didn't do it I guess because they didn't want to lose the precious 9:30 am time-slot. It's only hurting the anime.
Toei needs not to be so damn adamant about it and put the anime on a break for good. Even the season/arc format could work. As much as we would like to see our favorite chapters animated, this non-stop adaption cannot work in practical.
Unfortunately, I don't see it happening. So, the only possible route that I can is a much-needed long filler arc lasting for at least 2-3 months. It won't probably help with the pacing and we're sure to be stuck with 1 chapter/episode (max), but at least it'll give the gap a breathing window.