He would struggle in today's game just based on his height (he was listed at 6'5"). You can't be a 6'5" forward and be a Hall of Famer in today's NBA. The average height in the league was a lot shorter in his heyday than now. Even Bill Russell was only like 6'9". League-wide the average height is now over 6'7". This doesn't mean they weren't great players in their era though.
It is surprising how enormous NBA players are. I saw Scottie Pippen in Chicago once when I was 15 or so and he was a giant in real life. On the court he looks like an average guy (which he was, in height). Even guys who are "undersized" for their position like Dwyane Wade are like 6'4".