I like that it is easy for me as an admin, because when i get alerts or other things going wrong in our server they are all at my fingertips! It also has great features such as being able to see what processes were running and if its working well or not etc.
The only thing about red scan which we dislike but could be improved upon would have been more detailed reports so you can actually understand each alert better than just seeing one line saying something went down. We needed software where everything was kept up-to date by us admins without having to rely solely on them doing this themselves - therefore making sure nothing got missed out.