You bring up a good point. When the Kings first acquired Richards I was sad as Carter was also on the table at the time, and brought, in my opinion, more of what was needed. Dean, however, prioritized leadership and, in the end, it worked out. That said, the scoring talent was still needed, which led to Carter later being acquired (on a steal of a trade).
The point is, you have leaders within the team and then you have elite talent - sometimes they overlap but in most cases that is rare. What Toronto seems to lack is in the realm of leadership that will push them forward and help them show up and win game 7's, but realistically so do the Kings. Even if we wait a year and somehow acquire McDavid (which is a serious longshot) that doesn't really fill the leadership void. What Holland will hopefully do is bring in both elite talent, and leaders (which likely won't be elite talent) that can helm the Kings through a dog fight of a series.