Sproles has been one of the focal points of the Saints offense since coming to New Orleans in 2011. Thomas emerged as another receiving threat out of the backfield for Brees this season, joining Sproles in the 70+ reception club. Moore took a step back in production in 2013 after having his first 1000 yard season for the Saints in 2012.
Sproles was a bit of a letdown in 2013. He did manage to eclipse the 70 catch mark for the third straight year since coming to New Orleans. However, he only found the end zone three times, as opposed to nine and eight TD's the previous two years.
Thomas, while not having an amazing season, was a pleasant surprise in PPR formats in 2013. He compiled over 1,000 yards, hauled in 77 passes, and found the end zone five times. Again, not RB1 numbers, by any means, but still a top 20 back in PPR scoring.
Moore has been a Saint his entire nine year career and has had marginal success, largely due to decent chemistry with QB Drew Brees . 2013 was the first season of the past four in which he didn't exceed 50 receptions.
Odds are they'll try to move Moore and either Thomas or Sproles.
Ultimately, these are all "good" players who have benefitted from having Drew Brees as their QB. Moore and Sproles are both slight of build, at 5'9", and will both be 31 when the 2014 season opens. Thomas will be 29... not old, but all of them are definitely playing the back 9 of their career. If they end up anywhere besides New Orleans, from a fantasy perspective, buyer beware!! Losing Moore won't affect much, as he wasn't much of a contributor. If Sproles or Thomas is traded, the remaining between the two and RB Mark Ingram would be in line to get a boost over their 2013 numbers.