That’s OK, but I’ve yet to see someone articulating what exactly doesn’t work in the old product. It’s always “Let’s rewrite or reinvent 90% of it, then add a minuscule variation”. The variation may be interesting, but the reinvent is what’s make it untouchable as no one (including the author) has time to ensure things are right.
A patch or a plugin is ok, but not a whole new project with dubious claims.