[Gollum the Great]

Originally Posted by Mansun

I have always wondered what would have happened if Elrond chose himself to be part of the Company, and perhaps along with Glorfindel, and others within his realm that were of similar power and guile. Could seven of the most powerful servants in Rivendell alongside Frodo and Sam have served a better role during the War of the Ring?

How would the Witch King have reacted to seeing Glorfindel or Elrond instead of his encounter with Gandalf at the gate of Minas Tirith?

The word "better" could be substituted for "more interesting". I mean, look at what the Fellowship did. It got the Ring destroyed and the non-Mordorian foes of the West soundly defeated. A new fellowship might not be able to accomplish that.
If the Witch King had seen Glorfindel again, if might have freaked out and fled the field.