Import Export : This may seem trivial but is it possible to use a different wording instead of IMPORT & EXPORT and/or use big icons & arrows in the GUI. English isn’t everyone’s first language and icons may help users in ensuring they don’t mess their core libraries up.
Maybe use ADD instead.
Can you incorporate another warning after, the first step telling users again what they are about to do
You are about to Add your Serato Library to Rekordbuddy 2.1. Are you sure? Yes or Cancel
You Are about to Add your Rekordbuddy library to your Traktor. Yes or Cancel
Another suggestion, perhaps in advanced setting that we can chain processes. E.g. Serato to Rekordbuddy + Rekordbuddy to Rekordbox + Rekordbuddy to Traktor + Save changes and exit program when job chain is complete.
Obviously another stern warning “you are on your own” may be displayed prior to the job starting.
So one doesn’t need to baby the laptop.
One click , Go to bed, Wake up to a fully synced library.