Do you have any preliminary plans for it?
No, I'm sorry. We don't have actual plans for it. At least not in a short time...
Maybe Dokan would support partially development costs?
You can contact them and ask if they are interested in adding support on their own. We cannot handle that integration at this time because we have many other things on our roadmap that have a higher priority, I'm sorry.
Syncspider seems to link Dokan and Atum.
It's the first time I hear of this service 🙂
You can test it and if it works, you can use it, for sure...
Do you know developers who might have done that kind development and what would be your recommended approach?
You can find any good WordPress developer on any freelancing platform 😉