@DarthFed , you're obsessed with being "King of the Hill." To be honest, at most Roger is first among equals with Novak and Rafa...they all have enough to be in the same general category of greatness. One or two more Slams than the others doesn't make any one of them greater, just gives them bragging rights. For one to differentiate himself as clearly greater than the other two he'll need to either be significantly ahead in Slam count (say, three or more) and/or have the lead in most significant categories (total titles, weeks at #1, etc).
I think what you are mourning is the fact that Roger's primacy is being eroded. This has been inevitable for half a decade or more. I think after 2013, many thought Rafa would eventually surpass Roger's Slam count. After 2016, Novak as well.
But no matter what happens from here on out, all three are going to end their careers as being one of the three greatest players of the Open Era, not just "guys who won some Slams and were #1 for awhile," or however you put it. They've all surpassed Sampras, who was considered to be the best of the Open Era before Roger came along. For one to be the clear GOAT he's going to have to earn it over the next two or three years by moving significantly ahead of the other two. I think it is more likely that that they all end within "debate's range."