Same thoughts... I liked Sensorscope R2's for customs, and the scope was just a fun extra to the figure, so I liked it more than the plain ones.
While I'd love a new R2 with both scopes really, I'm unnerved by the "smaller" astromech size Hasbro's going with, and so I'm kind of feeling that the days of me wanting tons of astromechs may be waning unless they're using the old sculpt.
That really is an interesting topic I think... Hasbro changing R2 is going to mix things up a bit on the display shelf, and I'm really not a big fan of it only because they waited so long to do this, and did all those repaints. It's beating a dead horse to mention it I guess, and they're doing what they want, but I honestly am a little annoyed with their move on this smaller astromech 15 years into the line deal.