Rain gear questions

[NHAero]

Fourfly's thread about moving to the PNW got me to thinking. I have a decent rain jacket and both neoprene toe covers and full show covers. Other than that, I have no rain gear. At home, this isn't an issue. I'm semi-retired, and it's not hard to fit my rides in when it's not actually raining by watching the radar. I use a fendered bike when the roads are wet.

But I've started doing multi-day trips, credit card touring, and I've just plain been darn lucky that I've had very little rain. What gear would I pack for those kind of trips? Particularly:
- gloves
- legs (do people use rain pants?)
- head (over or under helmet?)

Let's say temperatures 50F and above. I'm not going out in 35F rain, hail, etc., like Fleche Wallonne.