apart from maintaining a POB, sieges are unbalanced and unfair, Defenders suffer time+resource+effort while, Attackers do not lose anything sit and right click on it
one example showed today that IE guys non stop sieged a POB today, but even we repelled them and still they will siege soon.
Discovery welcomer page exactly says "Build your installation and manufacture goods!", not what I said in the first paragraph
I am sure when that POB will gone Discovery will lose another -x amount of players
and same for other pobs, because some people play the game for it.
this is said millions of time but POB rules need to be changed asap
like failed siege results in 1 day cooldown to siege again. or a requirement of amounts of people in specificed times etc etc