More Than Foes
The other day, I started discussing monster manuals, and their penchant for being filled with enemies, and being woefully scarce on allies. To some extent I get it - you want a book which provides a plethora of opponents you can throw at your group, so they have things to fight. But the thing is ... what about allies? If the PCs want to, for example, go out on some adventure and want to bring some not-hostile creatures with them, then what? "We want to go out to the forest and team up with one of the local dryads, and help her with this problem". Or, "so there's a silver dragon around here, we want to recruit it to help us with this significant challenge". Or, how about, "this gold dragon has been driven insane by this dark relic, and we need to put an end to it". What if the group isn't entirely 'good', and has to face down an archon or angel? Or a lesser divine Good creature? Sure, there's options. The GM can reskin a monster to suit...