Hello, dear all.
I am not sure if this is the right place to suggest to Wikipedia MediaWiki development people. I believe that having a good feedback, including suggestions, is very important to Wikipedia's further development.
Google is one of the companies that really cares about the feedback from users, they say it that they love to hear from the users. It has a well-developed feedback gathering system, which is accessible through the help on their services.
I believe one of the success factors of Google was trying to be good for people, so people wanted to give out their good ideas on further development. People like to give good suggestions to the one who is creating something that they like.
I believe the time has come, and Wikipedia has the level of importance to the World, where people would want to give their good ideas out to Wikipedia software developers.
So one suggestion would be to make such a feedback system, and there should be a much larger number of people giving out their ideas; some of which might be of real value.