If you remove password option in User Accounts, the icon becomes the size as appear when u click Start. You can always re-create this password option, and if you are worried about people able to RDP into your machinem no need, they can't due to password requirement and if there isn't one they simply can't.
Btw, if they make this logon box dynamic as in Xp, then my issue with screen lock not appearing on both dual monitor might be fixed.