Should we ban the Griffin Conservatory and the Hive of Serpents?

Did I express myself clearly? Hidden resources are a completely different matter; you still need to acquire them (and they are usually guarded and not always located nearby), and most importantly, they require troops, which are few in number (compared to a couple or three hives, for example) and cost money. Basically, I would like to hear reasonable counterarguments, other than something like "this isn't chess." Regarding the majority of games, I doubt that...