fukk yal'll Cell was a stronger villain character wise.
Cell strived to get stronger while Frieza only wanted to be the strongest.
Why would frieza wanna be stronger? Dude was the strongest in the universe excluding a GoD and sleeping super demon.
The constant ether Cell would be giving the whole Z squad would be enough to make a greatest hits album.
Frieza killed Vegetas planet, race, and dad then made dude a slave. Arguably the biggest L in DBZ history. What Cell do compared to that.
Cell is just a lot more cunning than Frieza. Frieza is a very one note villain but Cell can play multiple angles. He had beef with every fighter on the team while Frieza only really had beef with Goku.
Only reason cell had beef with folks were because they were all his daddy and dude was weak. Cell struggled against Vegeta, piccolo, and Tien at different points. Frieza bodied piccolo, Vegeta, and Krillin with the greatest of ease.
No doubt we would see a SSB Cell too.
Cell got beat by Gohan. Dude was combination of the Z fighters and all their teqniques but got beat by Gohan.
I invite anybody to change my mind about this but its just too obvious.