You will want to seek legal advice before signing anything. I think general thoughts here will be that you don't get in the way of a divorce or separation but you don't do anything to help move things forward. In other words make your h so all of the work. Once you get legal advice go ahead and sign. Separation will be better than divorce, all else equal.
Me-45 W-44 T-7 years M-3 years (4th anniversary July 13, but we're separated) Kids from previous relationships (s14 d16 mine, s23, s24 hers)