Truth be told, I'm not sure which one I would rather have.
Spinning your wheels and having consistent 77-86 win seasons with not much to show for it can be fairly frustrating in its own right.
If done improperly, a total rebuild would be a complete bleeping disaster for this franchise, especially when its hard enough to draw fans. They looked like they got some things right in recent years with drafts and Latin signings, but the real challenge awaits in the higher levels. There is still much work to do to getting a respectable minor-league system. If there's anything recent years have taught me it's that you can't depend on all young guys or all vets, there has to be a proper blend.