The mods are purging pages. Below is a list of suggestions to reduce the likelihood of your page(s) getting deleted.
Start your page off in a sandbox. No one will touch in there. It will give you more time to think about more ideas.
Place a {{WIP}} on your page. Fair warning, it does not protect your page as much as the sandbox. If the mods do not think the page is going anywhere, they will delete it.
Read the community rules of page creation before starting a project.
Have a mod or the community critique your page for improves. There is a writing critique thread on this wiki.
Write with a friend. (Make sure you guys are good buddies and can communicate ideas in a constructive way.... The Midrooms did not survive because there were some conflicts.)
Other suggestions.
Remember the mods are not doing this to be cruel. They are trying to improve the quality of the wiki. This wiki has a reputation and while it is improving... it is still not great.