Looking over most of the rituals, I don't understand why so many of them have a cost beyond time. You shouldn't have to split resources between encounter-based conflicts and non-encounter conflicts, imho. Furthermore, during an adventure, there are time-critical tasks that need to be accomplished. For instance, picking a lock in a dungeon is usually not something you care toss 10 minutes around for (wandering monsters, sentries, etc). If it is something you can spend 10 minutes on, then it doesn't really matter if the rogue tries a few times or the ritual caster uses a ritual. For many other ritual effects, the time component is also a sufficient impediment (such as Arcane Lock).
For other rituals, of course, I think other restrictions are better than a gold piece cost. Drawmij's Instant Summons, for instance, has a built-in restriction that only allows it to be in effect on one item at a time (for one person). That's a sufficient restriction in my mind, given the time requirement. Other abilities, such as consulting Oracles and the like, are better handled by other time-related or other limits that prevent you from spamming the few problematic rituals that are left.
Thoughts?
For other rituals, of course, I think other restrictions are better than a gold piece cost. Drawmij's Instant Summons, for instance, has a built-in restriction that only allows it to be in effect on one item at a time (for one person). That's a sufficient restriction in my mind, given the time requirement. Other abilities, such as consulting Oracles and the like, are better handled by other time-related or other limits that prevent you from spamming the few problematic rituals that are left.
Thoughts?