I'm not sure you have commented in the right area for what you have posted. 

Although this would be fun, there was only ever one in existence and it was destroyed at the end of the first book. 

In the newest chapter to HP they mention that all time turners were destroyed, as we take place after this event it would doesn't seem it would work, but thank you for the idea.

If you are finding this a problem on the site then talk to the MoM or Headmaster of the site and explain the issues you have been having or seeing, they will be able to help you

The colour is different, the Head of Houses is much darker than the Journalists colour. 

When you are graduated then you may RP as a ministry worker without having an IG job. 

A status competition can take a while to set up and it also makes it more special when they are further apart. 

Although this is a nice idea, some users may just click that they have read without reading and the problem would stay the same. Luckily we do have ATs and Teachers and a complaint system for homework if a student feel it's been graded wrong.

Chat is not always going fast, usually at busy times, some users may get annoyed and feel they cannot take part in chat if they can't reply when they want to be able to - I understand that a fast chat may seem scary to some users which is why it's best they come into chat at a quieter time so they feel more at ease. 

If you see an error on the site please let the Headmaster or MoM know - they keep tabs on editing these things.