Is it worth training a center with atrocious outside defense or is it not really a big deal?
In general no, especially if they are tall. You want your players to be well-rounded for salary reasons, and trying to train a 7'0" guy from 1 OD is going to be painful.
No to No.
Yes, it is painful, but it is worth it, especially in you want to get away from zone defenses.
founded in S3 IV.5 (34234) - returned in S28 IV.7