Business case?

My background is in finance and I have spent many years putting together, reviewing, and pulling apart, business cases for a wide variety of proposals. While the business case is often abused (the Goal Seek function in Excel has a lot to answer for!) the discipline of assessing investments against their likely or possible return is simply good practice.
What frustrates me in observing the public sector is the seeming complete lack of business case type thinking.
Take Lords reform. It has been a political football, kicked around by our politicians, with each team always kicking in the same direction, based on their ideology. Now Lords reform appears to have been parked for these completely political reasons.
My observations of the issue are more practical and economic...
In our current financial crisis, what benefit to our economy would Lords reform deliver?
What would reform of the Lords cost? (so that we can weigh the cost against the benefit...)
While it would be like the proverbial turkeys voting for Christmas, I have long been a believer that our political systems are bloated and ineffective. For example, the business case for halving the number of MPs while increasing their salaries and expense allowances by 150%, is clear to me. We have the highest number of MPs per head of population in the western world. Much of what our MPs do is rubber-stamping of what is effectively decided in the European Parliament. The MPs do not earn enough to attract the best  - just look where an MP would be in the salary hierarchy of any large company, I estimate about half way up. Half the MPs, 75% of the cost. Same results. Easy business case.
The Lords is pretty much the same: 
Is it doing a reasonable job of providing checks and balances to Parliament? Yes. 
Are there too many of them? Yes. 
Is it worth revamping the system. Probably not. There would likely be little results improvement, a lot of cost involved in "fixing" it. And likely no operating cost reduction.
I am glad the Lords reform is off the table, even if it is for the wrong reasons...
What is on the agenda of your business that is political, that has no business case? Or what should be on the agenda but isn't because it would be political suicide to raise it? Or which business case really makes no sense but has been manipulated to deliver a politically expedient result. 
I challenge you to think in a business case fashion in everything you do.