Li Shenron
Legend
I suppose this is another one of my typical "minority thoughts"
I just think that I would definitely buy more monster books if there weren't so many high-CR creatures. I know that it is my own problem not be able to run high-level adventures easily... But I also know that if I want to use a monster whose CR is too low for the current needs of the adventure, it's a piece of cake to bump it up with the advancement rules, and it's actually fun to choose between HD advancement (if you just want "bigger stats") or class levels and templates (if you want more abilities). On the other hand, doing the opposite - that is, lowering the CR - is much harder, because there is no guideline to adjudicate the new CR.
It happened recently when my players ended up into a haunted forest that was supposed to be half-shifted between the material plane and the plane of shadows. PC party around level 6th, they faced several Dusk Beasts from MotP, and to make the leader pack I simply advanced it to CR 8. But I wanted also to scatter some Umbral Banyans around the forest, and they were CR 10, I thought about reducing the HP, but it didn't feel fully appropriate, and still I couldn't know how to make the final CR appropriate (I wanted quite many of them around, so they couldn't be too much of a challenge). Well, at the end I forgot about it and just used Assassin Vines with the Shadow template.
I don't know what do other people do to lower the CR of monsters... do you just scale up the whole adventure? But what if I want to use some cool monsters but don't want to play too high in level, for example to avoid issues with powerful divinations/teleportations and too many character abilities to keep track of?
I'm a bit frustrated that there are some of my favourite monsters like the Banshee and the Kelvezu which I would probably never use because they designed them too high CR for me :/

I just think that I would definitely buy more monster books if there weren't so many high-CR creatures. I know that it is my own problem not be able to run high-level adventures easily... But I also know that if I want to use a monster whose CR is too low for the current needs of the adventure, it's a piece of cake to bump it up with the advancement rules, and it's actually fun to choose between HD advancement (if you just want "bigger stats") or class levels and templates (if you want more abilities). On the other hand, doing the opposite - that is, lowering the CR - is much harder, because there is no guideline to adjudicate the new CR.
It happened recently when my players ended up into a haunted forest that was supposed to be half-shifted between the material plane and the plane of shadows. PC party around level 6th, they faced several Dusk Beasts from MotP, and to make the leader pack I simply advanced it to CR 8. But I wanted also to scatter some Umbral Banyans around the forest, and they were CR 10, I thought about reducing the HP, but it didn't feel fully appropriate, and still I couldn't know how to make the final CR appropriate (I wanted quite many of them around, so they couldn't be too much of a challenge). Well, at the end I forgot about it and just used Assassin Vines with the Shadow template.
I don't know what do other people do to lower the CR of monsters... do you just scale up the whole adventure? But what if I want to use some cool monsters but don't want to play too high in level, for example to avoid issues with powerful divinations/teleportations and too many character abilities to keep track of?
I'm a bit frustrated that there are some of my favourite monsters like the Banshee and the Kelvezu which I would probably never use because they designed them too high CR for me :/