Regrading starts.....Where??

Hi  all, today climbing the idea of regrading routes came up to my mind againg, and wanted to put this idea here to see what you all think about, here it goes; I remember regrading debate here in this forum and so, I thought that  IF  wanting to regrade routes, it should be since the really difficult ones that can be said to be the cruxial type of routes that state where the really climbing starts for the great techniques used and strength needed. I dunno, but the great climbers should....so maybe IF.....not saying that there should be a regrading, but IF....someone wanted to start a regrading, they should start with these type of routes, ......7c....8a....dunno, but around these grades I think that the crux routes start....and therefore  [IF   regrading]. I think actually the grading system has evolved really good and i think it doest need more evolution , because a grade for i.e. 7c/7c+ is........an indecission grade and person.....or not, but  I really think the actual grading is perfect, its in his climax. looking forward to other opinions.....thx