Consider packages of actions that might include things you don't like but could still make sense as part of an overall package that on balance is good for you. Eventually, once you have it all out on the table, you are in position to develop a proposal. Then you will be able to build trust with your negotiating counterparts by laying out and agreeing on their interests and your interests. You may be surprised how fast concurrence will be reached on these. Your counterparts will quickly and readily relate to their interests, including some they may not yet have focused on. It will become clear to them what they will have to give up if an agreement isn't reached, and this can be very powerful.