The entire Xindi arc could have easily been done in only one episode at the end of season two, followed by six (at most) episodes in season three. Devoting an entire season to it was stretching the Xindi concept, the augment arc was nicely told only three episodes.
I for one generally enjoyed Northstar, but that could have been told/inserted anywhere prior or following the Xindi arc. Northstar added nothing to the Xindi story.
Hatchery, re-written, could have also have been moved out of the Xindi arc. It added little to the arc, but was independently a interesting enough story.
The argument could be made to also remove Similitude, but I personally feel that it is a excellent story, and I can't see it working as well outside the Xindi arc.
What little important plot information that was revealed in E2 could simply be moved to another episode, revealed in another form.

I for one generally enjoyed Northstar, but that could have been told/inserted anywhere prior or following the Xindi arc. Northstar added nothing to the Xindi story.
Hatchery, re-written, could have also have been moved out of the Xindi arc. It added little to the arc, but was independently a interesting enough story.
The argument could be made to also remove Similitude, but I personally feel that it is a excellent story, and I can't see it working as well outside the Xindi arc.
What little important plot information that was revealed in E2 could simply be moved to another episode, revealed in another form.



