[pavel_lishin]

> it sounds like the overhaul has created a grannies broom; there's not much of the original sub left.

I've heard of Theseus's Ship, and grandfather's axe - granny's broom is a new one to me.

[mkempe]

I noticed, and enjoyed, that variation too.

A few of my software products have gone through multiple frameworks and rewrites, but from the user's point of view they appear to have remained one evolving entity. My phone/personal-digital-assistant also has kept its name for 21 years, but has gone through a series of reincarnations.

[gaius]

The saying is usually Trigger's Broom, after the character in Only Fools And Horses.