According to that Kendrick Perkins would be garbage. He is not a great passer or shooter. Yet he shoots over 55%, I think around 60 last season. Of course I can only compare to real basketball, not logic internally obtained from this game itself. If people want to do that then this suggestions forum is just farce.
Kendrick Perkins is both a pretty decent passer and a pretty decent shooter. He's not Shaq, but he's not in any way comparable to the players you're pushing into the discussion.
If you're looking for a really crappy inside shooters, that's Ben Wallace/Reggie Evans category (coincidentally, both of these have career shooting percentages in the .400s).
"I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve."