I love this thread!
Let me hit a couple of issues:
1) The financing issue is not really correct. I was in NYC yesterday meeting with investment banks about this exact issue. The whole idea that the City can finance it for less is simply not true. The initial interest rate of tax free vs taxable is lower but there are so many other factors that go into the financing cost (like the tax rate, amortization period, the spread of taxable to non-taxable, tax deductions, depreciation, leverage factors etc). When taken in total we can finance as low if not lower. I don't want to get into a graduate level finance course but suffice it to say to say that our offer came with a complete plan to pay for it. We had (have) banks, investment banks, etc lined up. The interest rate thing is simple one for people to understand but there is a lot of important stuff that sits deeper in the numbers.
2) If we can find anyone who wants to operate a "for profit" mass transit system that is not subsidized, I say we do it. Unlike parking, there are natural monopoly cost conditions that essentially require that we have a mass transit asset as a public good. Those conditions are not the same in parking. The evidence of that is that in Grand Rapids we already have a number of private parking operators but we have no private mass transit operators (please don't argue about Spectrum's parking buses because those are supported by other revenues). Like the park system, mass transit is a public good and gets financed by millages etc.
3) As for the outlying parking lots that you suggested before GRDad, It is an interesting exercise but this market is not ready for it. As much as we complain about parking, we all want our cars near us. If someone is going to bother driving in from Ada or Rockford, it is probably not worth $25-$50 bucks a month to park at Michigan and Leffingwell vs downtown. Put a light rail that goes the whole distance and you are likely to be more successful.
4) The problem with the current system is it is set up as a subsidy but the rules are not clearly stated and it reeks of "good old boy" behavior. Without taking shots, recent decisions on where to build lots smacked of cronyism (at least to a guy with no skin in the game). There is no parking shortage downtown...only a shortage of subsidized parking. That is why developers are talking to Pam Ritsema. They want her to give them subsidized parking (What a coup if you can get it). The way it appears now is that the decision is not obviously based on economics or best interests of the city. I wonder how the city is going to decide where to build those additional lots. I think the people around those lots will get a benefit that the rest of the city won't enjoy and because it creates winners and losers, the development community is lobbying and the city is picking and choosing. If it were left up to the private market it would be based on economics. With 2 or more players in the market and no illegal collusion the market would be fairly efficient.
5) Parking decks are not as costly as we are hearing. I cannot figure out how they justified that new lot on Commerce. It is very costly. I think the huge lot by GVSU was about $16,000 per spot. I can understand some scale benefits but $51,000 for Commerce seems very high. And at $125 per month, how can one justify the cost?
6) We are not NYC or Chicago. But I think we are similar to Strausburg, France and they seem to have a very nice light rail system.
All for now
DJL