Twitter should leave the platform as is currently and clone into an alternate twitter-verse, ATV, where all kinda vices and foul language would be allowed and supported. Original Twitter would be more intolerant of trolls, related vices and foul language, outrightly deleting transgressing accounts even for incomplete, symbolized hybrids like f*$# and so forth.
Subscriptions to ATV would be based only on fake names and related credentials (including email addresses) and subscribers would be able to purchase troll units, (instanceOf)xVice units, etc.
To register, you would have to use your original Twitter email address initially and maintain an annual subscription to keep twitter-verse from disclosing your identity on Twitter. The revenue sources from ATV could be expanded further from this point.