OK, so are you saying there is little to no equity in the house?
If so, you would be an idiot to trade your share of his pension for non-existent equity in the house.
I would NOT trade away that pension share for anything other than hard cash or its equivalent. I certainly wouldn't trade it away for more alimony - if he gets disabled and can't work, the courts would reduce that alimony. So don't trade the pension share for anything other than a solid asset that can be converted to cash.
Also remember the tax ramifications of any arrangement. For instance, alimony paid to you is taxable income for you, and a tax deduction for him. You have to pay taxes on that alimony that he pays you.
