You've opened a big can of worms there.
There have been loads of discussions about competitions, but those who were most vocal in support really didn't do anything to start the competitions, let alone organize, score entries, post feed back etc.
Last year is started the competitions up again after seeing no one else lift a finger, despite the fact that I really am not interested in them. After that 1 competition no one else bothered to carry things on.
The other big issue is no one can agree on the structure of the competitions. Weekly/monthly/quarterly/annual, themes, open, categories, ma community voted, official judges, how the scoring should actually work, when the photo must be taken, etc. If there is a preference then it tends to be towards a structure that takes both more work to mange and excludes more people, e.g. too frequent with restrictive themes marked by select judges.
The only way I see the competitions working is something much more open and easy to both partake in and organize. Quarterly competitions, photos form the prior 12 months acceptable, no themes, just broad categories (people, wildlife, landscape) and community voted - each person gives a score out of 10 for any photos they want using any criteria they want. Highest average score wins. this way it is easy for people to submit photos, the quality is higher, everyone has plenty of photographs to get n entry, can photograph subjects they are interested in, etc.
Now I have posted that I am sure someone is going to come along and demand weekly competitions with an intricately complex theme and come complex anonymous voting by selected judges. Yet that person will never start the compensation or put any help into organizing it. We've been here so may times.