>>169765749>Would you say the series does a good job at making sure everyone besides Luffy stays involved?
You'll get a lot of people saying no, but it depends on what you mean "involved." If you mean in terms of fights, then no. One Piece is horrible at that. Luffy almost always gets a big fight every arc and kinda leaves everybody else to deal with the big baddies' underlings as a collective, and usually only two to three people in the crew get a fight per arc. Even less often is it a good one.
With that said though, pretty much everyone feels at least relevant plot-wise, everyone on the crew is critically important and without them we wouldn't be where we are now, which is more than can be said for a lot of shounen series.
So if fights for side characters are what matter most to you you're gonna find a dry vein in this series unfortunately. The side characters are most often used to be beaten to show how strong enemies are.