[Suzerain of Sheol]

Just think about this:

We don't have Pippin along. No goblin attack in Moria, (or, at least it's delayed).

If the Balrog is still roused, we know have both Gandalf and Glorfindel to take it down. They should both survive, as it is NOT a foe beyond Glorfindel.

So, Gandalf lives. Presumably, no orcs chase them out of Moria since Glorfindel is SHINY and terrifying.

They reach Lothlorien in much better spirits, and together, Glorf. and Gandalf gain much more wisdom and insight from Galadriel and Celeborn.

They sail south and part ways as intended. Aragorn goes west with Boromir and is crowned king. Gandalf and Glorfindel either accompany Frodo to Mordor or go to help rally Rohan.

I could go on...