I like to organize the Location of my plugins myself. First Thing is so less as possible on the Windows c: drive. In VST2 most applications allow their plugins deploy customized. So here f.i. my organization Looks like:
d:\musik\VST64<Vendor>
In this case it is easy to organize and each daw can reach this place.
It makes me worry a bit if I cannot use my further Absolute(x) Plugins in some of my other daws. I guess this will allow Native Instruments get ground there where (Kontakt vs Halion f.i.) Steinberg will loose it. I do not care too much about as I own both. But it will have more Impact then the decision only to Support 64 Bit.
cheers