[quote=@TruthHurts22]
Is the 'contesting ownership' something akin to different factions vying for it, or more on an individual "gimme that thing" scale?
[/quote]

I’d say it’s planned to be primarily two “factions”, the PCs and whatever organization is behind the main BBEG. There might also be other less important factions or independent and rogue elements that attempt to take it for themselves (ala La Squandra from Part 5), and there may also simply be random enemies that either discover and target the Arrow by happenstance or are responsible for trouble completely independent of the “main plot” the way Part 4 tended to do, just having unrelated Stand user troublemakers cause a problem for one or several of the cast.