I think you need to qualify disaster. The old system wasn't a disaster for senior executives for many lenders as well as Fannie and Freddie. Management received huge bonuses and stock options for many years until the wheels came off the train. Had the IndyMacs, WaMus, CountryWides, and GSEs taken their lending responsibilities seriously these entities may well still exist or at least have not needed taxpayer money. However in this scenario, even though the same management may still have been employed today these individuals would have been far worse off financially. These managers chose to enrich themselves at the expense of their company.
The same lenders who were gaming the system under the broker-select model will do so, or have done so already, under the HVCC. The HVCC is nothing more than a mere road block easily side stepped. The current problems are of a managerial and regulatory oversight nature. Solve that problem and the "who picks the appraiser" issue becomes a non-issue.
BTW I just bid on two assignment for a local lender, both sent by the in-house loan officer. I also just completed two assignments for two different MBs who ran the loans through another local lender. Both of these local lenders are doing well financially and are in the black (neither sell to F/F). I chalk that up to responsible management and prudent oversight of the loan process. Maybe some of the larger institutions and the GSEs should try that.
(Edit: Apology to Lee, you did qualify disaster in your second line.)