Hey there giffgaffers.
This is great news, I'm glad you are constantly reviewing your Goodybag offerings, giffgaff really do need to remain competitive in the fast changing mobile market. For the moment, you are doing well and in the lead (even taking into account Ovivo, which I use as a backup SIM, and Virgin Mobile's unlimited plan). Looking forward to hearing more!
I think that all sounds pretty sensible.
For me, I think the ability to end a GoodyBag early is something that could be very interesting. Especially if the auto-recurring purchase can be maintained associated with expiry of one or more of the elements of the bag or the 30 day period.
For instance, some people might want to re-purchase if they run out of minutes, but not data, or vice versa - could this be catered for?
The ability to recurr the £10 GoodyBag once the data has run out could potentially satisfy the needs of the occasional tetherer, and the ability to renew the GigaBags when they have run out of data would prevent sim swapping for higher usage scenarios.