This is always a tough choice, I'm actually on the crossroads right now, though with significantly less invested (about four man months). I'd argue (and am arg

This is always a tough choice, I'm actually on the crossroads right now, though with significantly less invested (about four man months). I'd argue (and am arguing to myself) that my situation is different, in that it is still early, so the benefits due to an improved architecture will have far longer to amortize. But it is still scary. I think the strongest point given, that there is a ton of 'tribal knowledge' encapsulated in a codebase that is impossible to extract completely, is far less relevant in a tiny shop.