Instead of a prediction, how about a statement of what would be a good bench mark:
A great year for Robinson would be to match Terence Newman's (a guy taken 5 spots above him) performance: 66 tackles, 4 INT's & 17 passes defensed.
Most important in that line up IMO is having 15+ passes defensed. He is a rookie CB so he is going to get picked on. If he isn't getting passes defensed numbers in that range it may very well mean he is struggling. Demarcus Faggins defensed 7 passes last year playing minimal time in 7 games and starting for one half of another.
For Babin, seems to me the benchmark should be set at matching Wong's performance--he is a solid, well balanced LB effective in QB pressure, run D and coverage. Wong 2003: 62 tackles, 3 sacks, 1 forced fumble and 11 passes defensed.
What that doesn't show is how often Wong had QB hurries, which was quite often. IF the front 3 can return to even 2002 form much less better due to the addition of Smith some of those QB hurries should turn into sacks such as in 2002 when Wong had 5.5 sacks. Seems to me a great rookie season from Babin would be 60+ tackles, 6+ sacks, 1 forced fumble and 10+ passes defensed. If that happens then big predictions can be made for next year.
Give these rookies some time before predicting pro-bowl years from them.