The question, in my opinion, isn't whether they're happy. It's whether they're confident the lineup as currently configured (and assuming it won't be reinforced in the draft) is enough to sustain them through an entire season + playoffs.
Well lets take a look at that. Its a fair question....and a good one. In fact that's one of the reasons I'm so comfortable with what they have currently.
LaFell - Edelman and DA are currently the top 3 options. If anything happened to Edelman, DA is a good fit to replace him. If anything happens to Lafell, some sort of combination of Dobson/Gibson/Tyms could be there to pick up the pieces.. If DA went down, Boyce is a decent option, and if, god forbid, Gronk went down, Chandler is never going to replace him, but at least he's a possible solution.
Lets not forget that Dobson was the most productive rookie WR in the BB era. This is a very difficult offense for a rookie to step into, and Dobson held his own. If his problems are more than just physical, it won't take us long to find out. However if all that was getting in his way were the injuries, and he is now healthy, then there is no reason to believe, he can't be the missing piece of the offensive puzzle we all have been looking for.
Lets not forget Tyms either. Like Butler, he was one of those anonymous camp bodies that stood out right from his first day at practice. He has a lot of raw speed and the length to be a deep threat as well. I am really looking forward to seeing if he can do more than run 9 routes. There is no question the kid has potential, but he needs to be better this year if he wants a real roll on the team. On the plus side, as the season went on, he started to find a more active roll on special teams
Lets not forget Boyce. I couldn't help hut notice that at least a couple of times in every TC practice I attended Boyce would get open deep. I've opined in other threads, that his running ability might make him an outside the box option as a 3rd down RB. He might have a better shot making the roster at that position than the crowed WR.
Lets not forget Brandon Gibson. I don't know much about him except that 2 years ago the Pats coaching staff thought he was the biggest WR threat the Phins had.....and then he got hurt. Last year wasn't a good one for him. If he comes back and is the guy the Pats thought he was in 2013, they got a steal. If not, not much is lost.
So in the end here's the problem. Who out there in FA is better than these guys, or THAT much better. Who out there who might have the skills is willing to come here and be at best the #4 option and have to learn a new, rather unique passing system, work their asses off....and for low end pay. Does that sound like the average WR mentality to you?
THAT's why I think we would be better off working and developing the guys we already have