This review will reference the original Criminal Minds a lot and is solely based on first and only episodes released so far, therefore my opinions may change as the season progresses.
Criminal Minds: Suspect Behavior follows a Rapid Response Team (aka RED Cells) consisting of SA Sam Cooper (Forest Whitaker), the "level-headed" leader, Mick Rawson, the calm "foreign-accented" pretty boy, Simms, the trouble-some, angry vigilante, Beth Griffith, the overly attached empathizer, Gina LaSalle, the yet undeveloped personality, and lovable tech-savvy Penelope from the original CM. The team contains the typical garden variety of character archetypes.
Like I mentioned in the title, CM: SB is more detective work than profiling unlike the original series from which it took its name. Also unlike the other series which utilizes natural dialogue to explain what they are doing, CM: SB crowbars this in awkwardly with pointless conversation and ridiculous monologue. Characters also jump from one conclusion to another without much thought and rely much on assumptions. Other details such as when the team found the location of the body annoyed, since it is rather impractical to take your whole team without police help to canvass an area for a body. I know the opening title said "untraditional" but seriously, an FBI team operating from a gym? Little stuff like that bothered me in this series for some reason.
One last thing, in CM, the unsub was revealed more and more as the episode progresses and based on what the team concludes which I think is a very clever method. However in this, the unsub was hidden and then totally shown midway through the episode even though RED Cell didn't have a clue as to who he was. The hints of his identity came after his identity was already revealed.
All in all, it is an average detective show but no way on par with the original series.