mcdhu,
AI haven't come up with ANY crosswind limits (excepting Auto-Land considerations) for any A320. There's a whole bunch of maximum DEMONSTRATED crosswinds encountered, but thus far the only actual limits stated are in company SOPs. Our mob couldn't help themselves, and imposed a new crosswind consideration for the aircraft.
A small difference performance wise is that Vmcg is increased by 1 Kt (due to greater wing span), impacting on short field RTOWs which are Vmc limited, but 2nd segment limited operations allow for improved RTOWs.
It's all been worthwhile, but no retro-fitting seems to be in order.