The first two arcs of the new world have been a bit slow but you can see developments that are going to loom large. One has to do with the rules of the whole OP universe and another major development could lead the strawhats and some unlikely friends into a major battle (hopefully that's not too much info)...I'm thinking this arc will lead into a very major arc with some heavy repercussions. So you can probably do with holding off until this arc concludes (since it's gone pretty slow who knows) and then catch up to a place where ish gets real.
This right here...these 2 arcs are setting up some big sh!t, its pretty much the Straw Hats being out of the loop after being gone for 2 years, and Luffy just challenged one of the Yonko, and it seems we are finally getting into the explanation of devil fruits, how they work, how they were created, and one of the ancient weapons being discovered...yeah, the OP universe is opening up for sure, major things are happening lol
you have been out of the scene since the crew got separated tho? do a little catching up, Luffy breaking into Impel Down and then the war at Marineford with Whitebeard...you gotta see/read those, it is basically Luffy's desperate attempt to save his his brother who was captured and set to be assassinated...its all Luffy fighting and struggling for 2 arcs kinda. The crew is still totally mia during this.