Vincent Jackson is a WR2 receiver when healthy and he's playing with a promising quarterback in Jameis Winston. He put up decent numbers in the 10 games he played, and you can't help but think they would have been even better had he not been in and out of the lineup so much.
He'll be starting again in 2016, and could be a good value, assuming he remains healthy.
Jackson is another year older (33), which means we could start to see his decline. He's about to play in his 12th season, and there's no hiding the fact that it will take a toll in the upcoming season. We already saw health concerns in 2015.
Prior to last season, Jackson had been one of the healthiest receivers in the league. It's possible it's a sign of what's to come as he ages, but you can't be scared off by injuries. He's not the player he once was, but he could be a good value later on his drafts.