"After HF21 - I think potentially one of the most important things Steem could do is to move from an individual witness model to one in which organizations are elected. The Block Producers within the EOSIO space are such an incredible driving force behind their ecosystem, with efforts that just dwarf the individual efforts we have seen over the years with Steem (no offense to current/past witnesses, I was one of em lol). I think if Steem had 21 entire organizations, moderately funded, Steem would benefit greatly from it."

Yes, I agree. So, how do we get that done? How do we attract them?

It is somewhat difficult with the current witnesses tasked with making decisions that will directly impact their pay... a major conflict of interest and something that causes very little change.