A lot of good points raised, I feel that less games in December and January would be beneficial, Decembers a very expensive month and January is a quiet month mainly due to the Xmas overspend, the pitch gets a break, summer football sounds good but there is so much competition out there and if you move into the School holiday zone you compete with holidays, the beach, barbies, days out, even diy, for others its weekends away, if you have the free time for other hobbies and interests then it would probably be more enjoyable in the summer, personally I preferred summer scrambling to wading through snow in the freezing cold when its getting dark so early. We even had an earlier start a few seasons back and the attendance figures were way down for the 1st game of the season.
For repetition of opposition, most fans want their moneys worth and a bit of variety thrown in too. Do people actually want to watch a run of games against Raith, Falkirk, Livvy, Partick Pars etc just because we don't play them often, when Rangers and the Edinburgh clubs attract more interest but play them more frequently. I would say things will improve when the bigger clubs return and so will the away support.
Perhaps the summer fans have a point 2011 hibs at home 30th July 3600 attended.
Although starting football a month earlier does nothing to influence going to a match at any other time during the season.
If you are looking for drastic measures then yes a complete winter shut down does make fans appreciate football when its not there but with that you are forcing people to fine alternative things to do, lets hope that their projects are all done and dusted for the 2nd half of the season.
Looking at the pictures of fans on caleyjags.com, tells a story of the mode age of fans, do you assume this is your target audience or instead strengthen the age ranges which are poorly attended and what do you do to attract them, if you take a concert for example does every one sit and watch and listen? the most memoral ones are where everyones up dancing and singing with the bands, if the atmosphere is improved it certainly encourages people to keep coming back, If things are improved on a budget then nothing bad will come from it.