glreschke much better 😉
'i want the wiki to be less optimum' you will lost them if you do that because it means that you are not offering a good service from the start. Then how could you deliver a good service at all ?
Be sure to know your target audience and if they don't fit (offenders,...), just block them, you are losing your time.
For the potential prospects, you could send them promotions that fit their needs or just block features based on their plan and ask them to upgrade.
What are you offering ? Content ?