It would be very helpful to be able to see the data of an associated object during debugging. The same applies to list values.Currently, we have to perform retrieves to have more detailed debugging.
This would be very useful indeed. There were times when I had to deploy a new version just to collect all the data I needed.
I think the most optimized approach would be to make this a button in the associations, allowing the information to be downloaded on demand. Having all associations retrieve the information at once could be very slow and not very helpful.
This would be very helpful and save a lot of time.
In the meantime it might be helpful to use Ciphix's Mendix Devtool (icw their very useful browser plug in) to inspect your app (and its database).
Hope it helps!