The real differences between the
Mavic 3 Pro and Mavic 4 Pro are more in the cameras, which have increased the dynamic range and low light capability. If neither of those improvements are necessary for your current type of recordings, you are unlikely to need or see any difference. I fly at dusk where the wider apertures are very helpful, especially when returning in the dark. I can fly later longer without significant loss of quality. Most of the rest are ergonomic improvements with the RC
Pro 2 and 30 second deployment, where the RC and drone both turn on upon unfolding, Free Panos, and true Dynamic Home Point without repeated manual resetting.