+18 and +20 vitapods are not uncommon at the bottom of tier 2, and yet the most common vitapods at the first level of tier 3 are +6. This penalizes anyone who pays extra coins to start a gate at tier 3, or anyone who joins a party after the tier switch. Nevermind that you're often running through half a floor or more before you find a vitapod at all.
Can't the average or most common health bonus of vitapods found simply get higher the deeper you go?
I agree. It does make sense.