What I think should have happened is that
Aragorn,
Gimli and
Legolas would abandon
Merry and
Pippin and catch up with
Frodo to protect him on his journey to
Mordor. They would catch
Gollum and still use him in conjunction with Aragorn for guides. The party would encounter
Faramir, who would recognise Aragorn for who he was and hail him as king. Aragorn would then, with Gollum's help, lead them to
Shelob's lair and Aragorn would kill the beast with
Anduril. They would also butcher many
orcs on their travels (only to silence them and keep their journey to Mt. Doom secret).
In the meantime, Merry and Pippin would escape after the
orc battle with the Riders of
Rohan and would still come to
Treebeard and gain his help in crumbling
Isengard.
Gandalf would appear in
Mirkwood and link up with Treebeard, Merry and Pippin and they would proceed to shadow
Saruman's army.
Gandalf would then proceed to Edoras and banish
Wormtongue and rouse
Theoden. They would proceed to
Helm's Deep where they would face an insurmountable host against them but this time you would get to see the Battle of the Orcs and
Trees. The
Ents would give battle orders to the Huorns and some crap would fly in that battle. Naturally the Ents and Huorns would prevail and Theoden would have minimal loss of life. They would immediately proceed back to Edoras and receive the red
arrow and head of to
Gondor. Merry would ride with
Dernhelm and arrive at Pelannor as in the book.
In the meantime, Frodo and party, would be proceeding towards Mount Doom. Aragorn would still be with them... he couldn't proceed to the Paths of the Dead and he wouldn't be able to hinder the
corsairs of Umbar. The Corsairs would sail up
Anduin and arrive at the Battle of Pelannor
Fields. Theoden would be killed by the
Witch-king and
Eowyn and Merry would then kill him. The Corsairs would overrun the battlefield and Gondor would fall.
Frodo and Aragorn with party, would proceed to Mount Doom and after much "hot potato" passing, finally throw
the ring in the fire.
Sauron would be vanquished, Aragorn would become King of Mordor and the
Dark Numenoreans of
Umbar would rule Gondor.
Later, Aragorn with Gandalf's help (he escaped the rape and sack of Minis Tirith on
Shadowfax) would forge a Great Ring and Aragorn would become the
Dark Lord. Then the story starts all over again.
Now I'm sure that's how J. R. R.
Tolkien would have wanted it written if he'd really thought out the plotline, especially if he'd have been thinking of making it into a movie.
you know.... and one time..... at band camp.....
That's the way Grond sees it..... but I could be wrong!!