You want to skip mediation and go straight to final hearing? The final hearing is a formality. All the major decisions are made before the final hearing. If there is something undecided BEFORE the final hearing, then the judge will reschedule the final hearing (meaning, you screwed up, now try again)
Let's say you own a car, just ONE car. How do you decide to share that after the divorce? Is she going to keep it? Is he going to buy it from her? Are they going to sell the car and split the money? If you don't know the answer to the "car" question, then it won't be settled at a final hearing. Again, the judge will say..."if you haven't agreed on what to do with the car, then we will schedule another hearing two weeks from now..."
Note that is just one very minor issue. There can be dozens or even HUNDREDS of issues to discuss and settle, PRIOR to a final hearing.
What you need to hear, and what your lawyer should be telling you, is that divorce sucks. There are no winners, only two losers. No matter how it works out, you (personally) are going to lose a lot of money and a lot of possessions which right now seem very important to you. It is for that reason that you are nervous about the mediation. YES, you're going to leave mediation knowing how badly you are getting screwed.
But here's the deal. You've got to take the hit in the wallet and the hit in your pride, or the divorce will never be finalized. And again bluntly speaking...losing a lot of money and possessions is sooooooooooooooooo much better than being trapped in a bad marriage.
If the marriage can't be saved, then be prepared to lose a lot of things that are important to you, and know that your sanity is worth the sacrifice...