Rebuilds are generally a bad idea, and I've never had a good experience doing that. Apart from what you've already stated, it's kind of an insult to the team be

Rebuilds are generally a bad idea, and I've never had a good experience doing that. Apart from what you've already stated, it's kind of an insult to the team before you, that you just deleted their code. Replacing a system is also not really solving a problem that the business cares about. So this enevitably leads to feature creep, "If you're rebuilding it, can you add X, Y, Z...". This then leads raises the bar even higher... The better alternative is to modularize the system somehow and replace seperate chunks... but that's easier said than done