Reebok is just lazy, that is why they fell behind and why they ended up losing all their major deals (NFL, NBA, etc. ). They're marketing is horrible. CF was their life boat, since reebok was sinking. They have until 2020. Nike cornered the market on innovation and design with all their lines.
Hopefully this sparks something in reebok, but I doubt it. If Nike wants it in 2020 they will take it.
The 1's were good. I never used the 2. I was a big fan of the 3 aesthetically, not performance wise. The 4 was my favorite. 5's were way too ugly, good thing the metcons dropped although I had about 4-5 pairs of 4's (only have one now
).