Ha, yay for anachronistic stew! And that's often a good thing. BM offers quite a bit of freedom, even if there are some restrictions on the gunpowder (It exists, but no guns or other firearms apparently), magic (You ain't a wizard/mage/sorcerer/whatever, but you could call yourself one and be a charlatan), and inhuman races (Ok, fine, Sirion has elves, but that's not very distracting. There are monsters, undead, and daimons, in some places, but you ain't one of them, and never will be. You can go call yourself one and be a lunatic though. I pity the poor fools who actually let you into their realm though.)
I mean, I kind of like how everywhere but Dwilight I can play a sort of Medievapunk style game. It adds to my imagination's enjoyment of the fictional world my imaginary characters inhabit. Immersion's good I guess, but we have to also respect the fact that the players are still human, and user interfaces are one of the most important aspects of every game. Successful videogames manage to allow audiovisual immersion while still allowing the user to understand how to maneuver in the world, with parts that can be managed with precision for obsessed or competitive players. Take Starcraft for example. The balance among races certainly factors into the popularity, but think about it. If we had something like Minerals: Pretty good, Gas: Kinda low, Supply: Nearly there, then guys like Flash wouldn't have the incredibly timing to know when to expand as much, due to the inherent uncertainty of an exact value being converted through the user interface into a non-exact value.
That is the same for BM stats, somewhat, I believe. Let's remember that at the heart of it all, BM is still a competitive game where we really are supposed to attempt any means for our realm to beat up some other realm. Maybe the goals have evolved after a while, but really, I think we are supposed to, you know...work as a team, aka the realm we chose, to win against other teams, kind of like how professional sports works.
So basically that means at the moment it's good that only the lord and the knights can view the exact stats of their regions. For something like the bottom bar having a lot of info (Woohoo, back to the topic.) I don't think there's anything really wrong with having some sort of expanding option. Some people like having fifty monitors to show every page with digital calculators open to optimize tax income and distribution to the armies and so on. There's nothing wrong with it, and in the end, it's that guy's time and effort that is being invested into a free online browser-based multiplayer strategy/roleplaying game.