More Import/export Fields

Almost all of my products are downloadable, and each product includes a number of variations. Some important settings are not currently supported in the import/export fields, which means a lot of extra work getting the products configured. Specifically the fields I would like added are:

Product page :

Time-unlimited download checkbox

Variations/Files to sell/

for each file:

Activation mode

License agreement text (could be link to file)

Agreement required checkbox

Readme (could be link to file)

I would be nice to be able to set the License agreement globally as an option.