Thanks for sharing and opinion, Raghavendra-sar.
In my opinion, Sreedhar would have done a bit of justice using NT in a western. In retrospect, Sivandha Man had that action elements in the open arena. The costume was mishmash of contemporary and retro, but with strong hints of cowboy/western, if I recall well.
For all we know, NT could have received such offers and he might have brushed it off saying it will not suit Tamizh nadu, and better leave it to one and only Jai.