I totally agree: forms to easily manipulate data would be awesome!

My suggestion would be to allow us to create custom forms where records could be seen and edited, also with scripting for bulk automation.

Example use case:
1. Scan a barcode
2. The record shows on the screen
3. The "quantity" field gets decremented
4. The screen shows whether the action was a success or a failure
5. Ready to scan another record - without having had to click on a single button!

I really wish Memento could do it, because it is the best-looking and most practical database app I've seen so far, and I wouldn't like to have to get used to another one for this matter!

You can already use an sqlite client on the sqlite database.
Database is in /data/data/com.luckydroid.droidbase/databases/db (the file has no extention)