Lanefan
Victoria Rules
Another variable is whether the players are running the same characters all the time or have "stables" of characters they can - usually between adventures - swap in and out of play.
If each player has several characters in the setting (and even more so if those characters are all connected through acquaintance or an adventuring company or whatever) then on learning what the next mission is they can - if they want and-or if they think to - build a bespoke party to suit. Stealth mission? Bring the rogues and mages. Giant-bashing? Bring the tanks and healers.
Flip side: when deciding (or writing) what to run next, in this set-up the DM has no way of knowing which characters the players are going to bring on the mission and so really can't curate anything anyway.
If each player has several characters in the setting (and even more so if those characters are all connected through acquaintance or an adventuring company or whatever) then on learning what the next mission is they can - if they want and-or if they think to - build a bespoke party to suit. Stealth mission? Bring the rogues and mages. Giant-bashing? Bring the tanks and healers.
Flip side: when deciding (or writing) what to run next, in this set-up the DM has no way of knowing which characters the players are going to bring on the mission and so really can't curate anything anyway.