The idea sounds great to me! It's actually something I'd thought about a lot in the past, when switching applications.
Some wallets do allow to export this information, but it's only really useful for importing into the same wallet on a new / other machine.
Keep in mind that it does not export private keys or other secret data, so you can't use it to migrate between wallets by itself - it only exports the labels. It is a security hazard to leave private keys lying around in a spreadsheet.