Let us NOT do this the cheapest way possible.
Let us plan these rail lines for FUTURE EXPANSION when we build them- not have to tear stuff out that was already built to accommodate new spurs or lines.
Let us think EVERYTHING out first- don't be strapped into small trains & platforms for instance.
I hate to see any of this stuff running on city streets- no dedicated railway- but then again nobody seems to care what I think about that potential mess.
Let's just get whatever your going to do about more efficient public transportation RIGHT!