Brothers, I can not comment on point No. 1 to 3 as they are totally personal preferences, changing from person to person, but what I can say about the 4th comment is that having front power windows and rear manual windows is not some thing new in Wagon R, as the same has been incorporated in various cars around the globe. Here is one example of this fact:
Toyota Vitz 2012 JDM Import
With Front Power Windows And Rear Manual Windows.
PS: Apologies for the earlier comments with pictures only as they were posted by mistake.