Re: 3 Reasons "Days Of Future Past" Is Actually X4
if Storm was in the very first script, I highly doubt Matthew and Simon wrote a really pointless role for Storm.
As long as she protects her team mates versus the sentinels, that whole reason is more than enough to have her in the movie.
She is Storm, a warrior and the leader of the x-men on X3. To drop her like she was a random mutant that none knows feels really stupid to me