There was already a failure to articulate an ideological alternative, even as an object of ridicule, prior to the Global Financial CrisisGreat Clusterfuck, which is part of the reason the crisis has been mismanaged as it has. But I think the crisis itself is providing the ferment and the space for alternatives to be thought out. When the next round of crisis comes, one can hope that at least some people in a position of influence will be willing to try something different from the old neoliberal consensus. Otherwise the next phase of the crisis (which may feel like collapse but won't be it) will have to provide the ferment for your "avant-garde party". And then will come a third fit of crisis, and so on.

If you are not convinced, try it on someone who has not been entirely debauched by economics. — Piero Sraffa