Very true.
I am not counting Wright as a WR though, and I'm also assuming a 50/50 (or better) shot that Amendola is gone and will need to be replaced.
Most importantly, I think the attempt to address the position with the 3 rookies last season has failed thus far, so we may need to take another draft pick again. At the very least, we'll need to bring in a middle/lower tiered free agent or two.
If one of Tyms, Dobson, or maybe even Boyce steps up in training camp---all the better. I think it's an ever-evolving position across the NFL from year to year, and even more so on this particular team due to several different variables, mostly the fact that we may be lacking in sufficient talent behind the top 2 options.