Cowboy's right.
I had a ROW agent tell me one time that their policy is that if it's not in writing, it never happened.
Just like they used to say at weddings, 'Speak now, or forever hold your peace.'
If the money's attractive to you, ask for the provisions you want to help limit the burden on your use of the property. If you don't care about the money, see it they'll bother someone else. Many times though, their engineers have etched the preferred route in stone so you may have to play ball with them.
ROW's benefit everyone, but in many cases the landowner (and his successors) is the one bearing the heaviest long-term costs.