"Numerous Hertha legends"?
Don't think there are that many...
But it could be argued that one of the problems the club is facing is that they did in fact hire too many ex-players instead of people who are good at their job. There seem to be a whole lot of people who got important positions just because they were buddies with Preetz. So if anything this club needs more experts, regardless of where they're from.
That's why a lot of people are looking forward to Dufner coming in as the new squad planner. Unlike his predecessor he never played for Hertha but he actually seems to have a good network that'll help him do a better job.