These "bad actors" are merely a consequence of the currently poor allocation.
Like terrorist attacks in Europe are merely a consequence of poor refugee status allocation? Well.. maybe. So Europe should make it less attractive to go there? Well.. maybe.
If you don't want any new members, that's fair. You can say that. It would also be fair for the incrowd to be able to buy more bandwih with the Steem Dollars that are orders of magnitude easier to accumulate for them. There are other solutions thinkable that are friendlier. But you have to be honest about what you want. Is Steemit full? Or does the community actually want new members?
Technically we (minnows) could fork the repository and start our own blockchain community with rules that actually make sense, rules that incentivize quality over quantity in stead of the other way around like it is here. Set a mimimum price for memos, unless the recipient is following you. Allow people to make a maximum of 2 free blogposts per week unless they pay a doubling amount. Maybe it would get more popular because it actually works. And then we close our bandwidth to refugees from Steemit.
Besides, a lot of the mass poor quality self-promoted and somehow royally rewarded posts are authored and bid-botted by vested members from the incrowd. The memo-spam is done by vested members who have made a bidbot business on the chain. New users don't even have a cent to send with memospam.
Yes, new members are the problem to everything that's wrong with Steemit.</sarcasm>
RE: The Spam Problem - Some Statistics