Question: should I try a37 for some old MD lenses?

My reply might be a bit late, but here is my input. Simply put, the lenses are not really worth buying a camera for. if you still want to buy a camera it has to be mirrorless camera like the NEX but you then have the stabilization issue, in mirrorless cameras in-body stablization is possibly only available in the Olympus mirrorless models.
If you want to buy Sony DSLR then you will have three choices for adapters.
-adapter without a lens for Macro work.

- a generic adapter with lens that usually adds 1.5x to focal length (in addition to the 1.5x crop)

- a special 2x minolta tele-converter
The yellowish tint is a result of the coating (to my understanding) you can always correct the white balance to an extent by shooting with custom white balance and using a grey or a white card to get the right one.
All of these add focal length to lenses that are already too long.
If your hands are weak and you want to get the best out of the two worlds (P&S and DSLR) buy an advanced P&S like the mini wonder Sony RX100 or the Canon G15 (that comes with more buttons and controls).