Stan, you seem to be clinging to the past: it's not called BIDS any more 🙂
As Developer Edition is now free, there is no clear reason why developers should not be able to install Integration Services, though that does not invalidate the technique you have described here.
Having to have all of the packages in the same project is a limitation in some circumstances (so any common 'utility' packages from another project cannot be included).
If additional flexibility is required, packages can be run from T-SQL (link), though they do have to be deployed to SSISDB first.
If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.