Judging by interviews President Donald Trump doesn’t sound eager to envision a world without him in charge, and he’s slow to acknowledge up-and-coming lieutenants who are eager to take the reins.The New York Times reports that when confronted with the prospect of Vice President JD Vance as MAGA’s next crowned leader, Trump is loathe to discuss it openly — even as his own personal brand struggles to reclaim the supremacy it once held with legions…