Bringing some of these points together I agree with comments made by @Row S in their objection letter to the Highland Council regarding the lack of active travel options to the stadium. Ideally the car shouldn't be seen as the primary (and perhaps only) way of getting down to the ground. Why isn't there a better match day bus service that runs people down to the ground before / after the game for a couple of pounds? As @STFU points out it costs a fair chunk to get a bus from the town to the ground. Saint Johnstone used to cut a deal with Stagecoach whereby supporters got a discounted day ticket when using buses on a match day. Could we look at this?
I see Inverness launched a cycle hire scheme which looked incredibly limited but perhaps it could be expanded to include a hire point at the stadium? Indeed better bike parking facilities might allow for some folk to feel more comfortable cycling down there on game day.
And for those that still want to drive the car parks still offer a valuable option but their management needs to be looked at.
The idea that the car parks could be developed, subject to all the usual caveats, is quite bizarre given that for some games they can be absolutely chock full of vehicles, particularly when we were in the top tier. I can't imagine the nearby industrial units would be too chuffed when fans and their motors are displaced to their car parks...