The whole Xindi storyline was rubbish, it was simply an attempt to keep people watching, and it didn't do Enterprise any favours. Personally, I thought the series was a lot better when they were exploring new planets, and boldly going where no Beagle had gone before.
Wrong, that was one of the best seasons in the whole Star Trek era. Just because you did not like it, does not make it right.
Well the xindi were tied to a lot of time travel issues... to my knowledge the future Archer saw may very well have changed already... so its pointless to ask for something that was prevented a long time ago. (besides that fed ship there were on was super UGLY I hope Archer changed us from that doom).