I've seen it more than once, someone coming around with the "Power Glyph of Doom" and the "Immortal, Unaffected by Guards Slavers Of All" just to have a big fancy war in the end where people fight, people die, people live, people fight, people die, people live and nothing comes out if afterwards. Everything becomes just the way it was before the uberness had settled.
Really people. Some of you just need to expand your perspective of roleplay. Nowadays people "roleplay" fights like I roleplay Sangwa going to the tavern. Vulgar, daily, boring.
When you read a fantasy book you're not just hoping to see fights. You're also hoping to see magic, feelings, surprises and fun.
Can guilds fight for controlling territories?
A: Yes, if the whole PS community agrees on a guild assuming the control of a certain location on RP, but on the game itself, no.
Can real wars provoke impact in the economy?
A: Not on the game engine, besides the fact silverweaves may have an increase in demand(Roleplaying an economical crisis is next to impossible as many won't agree with it).
Can fortresses be built, with defensive siege weapons inside, that will give anyone trying to invade it a real challenge that does not involve random one-hit kills with silverweaves but a real, epic and longlasting siege?
A: No, but once Planeshift reaches 1.0, hopefully yes. Unfortunately, it is too big for being roleplayed, and deciding which army wins the battle in a roll of a dice won't help at all in the agreement between both sides.
Can a fighter ride a ryunaak armed with a lance to operate as a knight in warfare?
A: Obviously no, and few would accept such thing in roleplay.
Does this all justifies many "wars for nothing" per month?
A: No way. No one make wars because "they're cool". In most cases, such things will be preceded by a long and tense diplomatic crisis, by some kind of "igniter" and by several other previous political and economical reasons, like the example below about the real World War I:
On June 28, 1914, Gavrilo Princip shot and killed Archduke Franz Ferdinand, the heir to the Austria-Hungarian throne, and his wife, in Sarajevo after purchasing a sandwich. Princip was a member of Young Bosnia, a group whose aims included the unification of the South Slavs and independence from Austria-Hungary (see also: the Black Hand). The assassination in Sarajevo set into motion a series of fast-moving events that escalated into a full-scale war. However, the ultimate causes of the conflict were multiple and complex.
http://en.wikipedia.org/wiki/World_War_I#CausesAnd real wars also bring real consequences. Any casualities on a seriously roleplayed war should be permanent at most cases(In other words, you can't just bring your dead character back to life after only few minutes from when this character was killed) and it also should bring other consequences, there are too much "1337 w4rs t0 pwn n00bs" in Planeshift.