It is not obvious what change would improve that situation. Maybe a pure social corp is a good idea. .This would allow the corp to grow and once they are ready for the wardec gameplay they can upgrade and deploy structures. That may be the healthy thing to do for retention, but it will not fix wardecs because the real problems have not been addressed.
A real solution to wardecs does not castrate them. This do nothing to improve the situation. A real solution will add tools to EVE independent of wardecs that allow for new gameplay that emerges from the sandbox where wardecs may be one possible way to go. I wrote a idea for this down a couple of months back: What we need is more tools not a wardec mini-game. A proposal for the expansion of the contract system - #31