I do agree to a point. There are some arguments against it though.
For one the NFL does recognize the importance of the CFL. The CFL was on the edge of collapse following the disastourous American expansion in the 90's and the NFL stepped in to bail out the league. I know that was 20+ years ago now, but they did help when the league needed it.
2nd transfer fees would have a negative effect on CFL player recruitment. NFL teams would be less likely to sign CFL players if they had to pay a fees to sign them. It's already competitive to get players signed. With less chances to head back south recruitment would be harder.
3rd it would also open up losing any player, instead of just pending UFA's. Right now this is mostly an issue with pending UFA's and players coming off their rookie seasons who want to head back south. Then any player could leave at any time.
4th a bonus for making an NFL roster would NOT fly with CFLPA. If you had the transfer fee, ok, but then once signed it would make ex-CFLers attempt to crack a roster much much harder. It's already hard to make a roster, but then if NFL teams had a close call they'd stick with the guy who doesn't cost a roster bonus.
Lastly, it's a very very good thing Awe is leaving the league. Awe is the dirtiest player I have seen in the CFL is a long time, I'm glad that trash is gone. But that of course is irrelevant to the overall point here