I would like to express that I fundamentally upgraded something in a concise way. That is, I did not create that something, but it is almost as if I completely redesigned it and made much better. The word would be used in the following way:
I fundamentally upgraded the manufacturing process to allow for considerably higher modularity and efficiency.
'Improve' or any of its synonyms are too weak, whereas 'fundamentally upgrade' seems too clumsy to me.
I guess 'revamp' is pretty close but it seems to me that this word might be too informal or not be appropriate in the given context.
Do you see any alternatives?