[angersock]

Obviously at some point you have to stop discussing something and start building it.

No, see, that's where we are having problems: there is a perfectly valid answer of "It's good enough, or simple enough, that we will leave it as-is barring a really big leap".

Assuming that you've got to build something to replace the status quo is still itself an assumption. Saying, in effect, "Hey, we've got to build something" naturally disallows a reasonable engineering conservatism.

Software gets better not as you add things, but as you remove them--people keep forgetting this.