Yeh, although I do use size as an indicator of what I will like in that pipe, for me it gets even more complicated. Depth to width ratio is more important. I do not like to stove most latakias, so a width to depth ratio of 1x1.25... For example .80" x 1" or less is what I designate as my latakia pipes. However, for my virginia pipes, not all virginias are the same. Some don't stove for shit, and some are so bitey that I prefer wider pipes for them. Virginia #1 and Blackjack are both so bitey, that I prefer really wide pipes, like above .90" wide. I have some over 1" wide. But, for an uncased Virginia, like C&D Virginia Flakes or Opening Night, I will go more for a .70 x 2.25" pipe to really stove the bottom half of the chamber to make for a really sweet smoke. Burleys... I grab my monster pipes. Just large and in charge, like .90" to 1" wide.
There are no hard fast rules. And, I will even break my own rules from time to time. I wouldn't get hung up on it. And, experimenting by trying different dimensions is how I found out that bitey blends do better in wider pipes. Also, I have found that really strong blends don't give me the spins as much if I smoke them in wider bowls.
Aromatics... I haven't found dimensions to make any difference with them, except, I don't want mess up my stacks or toppers with ghosting them with that shit.