Yes if Elton Brand becomes your main scoring option and you can handle his large contract for a few years. If not, no, because Dwight Howard will develop into a monster if you train him (not that he already isnt good, with his power superstar ability).
Mike James and Steve Smith for Cuttino Mobley?
Mobley is in his 2nd year of a 5 year/42 million, while Mike James and Steve Smith are off the books at the end of the year.
My current roster is:
C: Araujo (damn good at backing down people, averaging 8ppg, 6rpg)
PF: Bosh
SF: Rose
SG: Peterson
PG: Mike James
6th: Villanueva (off the bench mostly because hes the only one that can block off the bench)
7th: Graham (good for 14-15ppg)
8th: Calderon (5th in the league in assists)
9th: Diaw (ratings in game dont compare to his real life counterpart, good distributor and slasher, no jumpshot though, he will develop soon enough

)
10th: Sow (project)
11th: Steve Smith (brought in for a 3pointer every now and then)
12th: Alvin Williams (rarely used)
With Mobley, this becomes my lineup
C-Araujo
PF-Bosh
SF-Peterson
SG-Mobley
PG-Calderon
6th- Villanueva
7th- Graham
8th and 9th- Diaw/Rose
10th- Sow
11th- Alvin Williams