Regarding swept-wing pitch up at the stall, I understand that, with washout, the wingtip stalls last, retaining roll-control at the point of the stall. Therefore, the tendency of a swept-wing aircraft is to pitch down, not up, unless someone is holding the stick hard back.
Tips stall first on swept wings, not last. Washout reduces the effect.
edit: tips stall first on rear swept wings. The X29 featured foward sweep to get around this as does the HansaJet.
But I understand your point about pitching.