Bipartisan or not, there's always something in it for a politician/agency/landowers/real estate companies/off road organizations/ business, etc. etc. when things like this are proposed...and I don't see it any differently here.
I think access is great and we need to fight for all we can get, but proceed with eyes wide open that there will be angles played, favors and the normal political crap that goes on with everything to do with public lands, public water, and public wildlife.
I also believe that if we're going to move forward with this, we (hunters, fisherman, and recreationists of all kinds), better show up and be very involved and keep an eye on the type of access we want and don't want.
IMO, its better to have some access, but wide open, do what you want access will turn a good area into just another area real fast. Access has to be controlled or the integrity of the areas are compromised.
Finally, if we're in a big hurry to open up all kinds of access, it would be smart to get more LEO's on the payroll to monitor and enforce access related issues. They're already stretched thin right now patrolling and enforcing off road violations, etc. now. While asking for access, we also should be asking for more funding to the BLM, USFS, etc.