If you have well defined components it is often reasonable to rewrite them. Rewriting an entire project is likely a mistake. I think the mistake is generally th

If you have well defined components it is often reasonable to rewrite them. Rewriting an entire project is likely a mistake. I think the mistake is generally the size. If you lock up half of the team and have them rewrite for 2 years then you are likely going to have time. If you slice off components that can be rewritten by a few team members in a couple of weeks you can likely get a good quality result.