I think it's a good idea if you MUST have local collaborators. Otherwise it can discourage people from offering help if they think only local people will be accepted.
It's a big planet with skilled people everywhere!
My preference is to provide a complete, assembled system because then I know proper components are selected, I know what was used in case there are future changes, and I can test everything and make sure it works. Then I ship it where ever it has to go.