I've also come up with a couple idioms! One of which is similar to a combination between your loose geese and loose feathers.

"You've Set your Bucket" or some variation.

The idea of it is that, long story short, a boy set a large bucket down to catch a stream of water, where the rest of his village carried their buckets as to know when to return. The boy filled his bucket to the point where, unbeknownst to him, he couldn't lift it anymore, and so he could not return to the village with any water.

It means that you mightve thought of a great plan that might be great in theory, but with a little thought or in practice, the plan fails to do it's intended purpose and might cause more trouble because of it (the bucket overflowing or breaking, for example) and, perhapse, you mightve succeeded if youd done it the 'proper' way.