Not sure if deleting an entire database will be a problem, but worth mentioning that I wasn't able to delete an individual field from a table as it caused issues with the 'replay functions'. This would thus be where I would expect some problems to come from if anywhere but, as pikiou suggests, is there a benefit anyhow?
Benefits are for BGA ... unused developpement storage
I have so many games from start of dev, that I was wondering if it was not better to delete older ones (I speak about dev platform).
storage got a cost (physically and virtually calculated at least) for owners... and that's a way to save a bit...