We do some upgrade blocks for floyd- I have oversize cold rolled steel ones on two of my own floyds and they are really good - they seem to have removed the tone robbing of the floyd - guitar sounds a lot thicker now.
As far as messing with tunings - always gonna be a nightmare with a floyd or other floating trem
+1 about the tunings.
Blocking a Floyd seems like a waste of a very expensive bridge to me, as well as defeating it's raison d'etre.
+1. Not to mention getting all the negatives (more involved restringing) for none of the positives.
Tremol-no would be ok, but I found (to be fair I'm useless at DIY, so it may be my fault, also it may not be designed to work with the gotoh floyd) it fairly fiddly, and also I thought I could "feel" it when I used the trem.
