The players want the mid-season break, so it stays.
The close season is very long at 4 months, but I'd say the people involved in the voluntary day to day running of clubs are very glad of it. (I know I only do the programme and the website, and I've taken a liking to the long break!) Also, it keeps costs down, as part-time players are only paid for the length of the season. Longer season = more wages (and other expenses)