there are aftermarket BBs available now for zestys, so no problem there.
the main pivot bearings are enduro so all good
the chainstay pivots are bushes indeed and cheap to replace (mine lasted 1 year of being hammered, main bearing still fine)
I replaced the headset with a hope one early on, so no issue there
top bike (and to rub it in I bought my 714 brand new at the end of 2008 for £2600)
Its got PUSH'd coil Pikes and a PUSH'd VAN R rear shock and it really flies now.
I'd buy another, if they weren't so expensive. Orange 5s still look like they are put together by a final year welding project.
cheers