Yes he'd be a good weapon not a outside receiver. He would be a great addition but still would need to address the WR position. Probably would be the return man as well.
The first three will command big contracts. As for Maclin, who knows, coming off the injury. There is no chance the Jets sign all four of those guys. Two would even be a stretch.
Byrd should be the big free agent signing of this off season, and Maclin should be brought in because he will come cheap because of his injury... High upside with Maclin. His injury happened back in July so he will have a full year plus more to fully heal.
I doubt Seattle will be able to retain Tate with them already having two WRs making over 8M, I really would love for the Jets to throw money at him. Graham is a pipe dream at this point and I'm not sure Decker can succeed as the focal point of an offense.
I've been lobbying hard for Tate. I think Tate with a rookie WR, a rookie TE, and Kerley is a nice group of weapons for Geno to start with. If Maclin comes somewhat cheap, I'd try to ink him too, along with Tate.