Filler from the manga itself would be hard, since it really doesn't have all that much in the way of real filler.Indeed friend, join us in manga gaf to discuss
If those are the intentions of the anime then they'll have to take liberties then. A budget to animate everything is unlikely. We'll probably get only major arcs and hopefully little to no filler.
Like, maybe the arc from part 4 where Josuke and Okuyasu go for italian food but why would you ever want that cut?