Another pet peeve is the text "that costs $x more than this card" (or with "less" instead of "more"). If your card costs $4 and x=1, why not just say "that costs up to $5." This wording is simpler and easier and they are almost always the same. Only use this phrasing if absolutely necessary, which is usually not true. Maybe sometimes they will be slightly different with Highway, Bridge, BoM, etc., but it usually doesn't matter - plus, let those cards catch a break!
This actually matters a lot. If Border Village said "up to $5", then having one Highway/Bridge in play would allow you to empty the Border Village stack in 1 buy.
Sure, I'm not saying in all cases - it's the right thing on Border Village, and I'm sure other circumstances may warrant it. But, no other official card has this wording (that I can find), and most of the fan cards would be fine with "up to $5", etc. If it needs to be "up to $2 more than this", that's fine, but most don't have that need.
Band of Misfits feels left out.
why does BoM have that wording, anyway? just so you don't have to deal with the infinite regression of BoM as BoM as BoM as BoM ad nauseam? does that actually make a difference? I don't know that dominion rules have a way to handle infinite loops as of right now since to my knowledge no such method exists, but it's not a hard one to add intuitively. you can just borrow the Magic rule of "okay we get it you can do this infinite times now tell us how many you're actually gonna do it for so we can move on." and there's no actual upside to playing BoM as BoM a million times before you decide its actual target. is it just for power reasons, to prevent it from being big expensive stuff with a couple highways/bridges?
I would guess
Band of Misfits/
Highway would probably be absolutely broken if
Band of Misfits read "up to $4".
Band of Misfits can be strangely powerful because of its utility, so preventing it from turning into whatever it wants when
Highway is on the table is probably a good check against it. Furthermore, it can be confusing enough to track what each
Band of Misfits is currently in play as, so ensuring that the pool is limited could probably save some headaches. (Though the Secret Histories do speak of a card that could somehow increase the price of
Band of Misfits and another expansion is on the way, so we can't count it out. I'm really just playing devil's advocate. I'd love to see
Band of Misfits turn into any action it wants to)
By the by, every reaction that is only revealed from your hand by strict definition already creates an infinite loop, they are simply built to avoid any benefit from this loop. (You can reveal
Moat any number of times, but you're protected from the attack the first time, so why bother the second? You can reveal
Trader any number of times, but you're already gaining a Silver after you reveal it once, so why bother the second? You can reveal
Watchtower any number of times, but after the first time it will have lost track of the card you're gaining, so what's the point in revealing it twice? and so on...)