Currently, deletion log entries look like:
23:26, 6 September 2016 Nihonjoe (talk | contribs) deleted page Shani Johnson (Multiple reasons: speedy deletion criteria A7, G11)
The most recent page length should also be included, like this:
23:26, 6 September 2016 Nihonjoe (talk | contribs) deleted page Shani Johnson (456 bytes) (Multiple reasons: speedy deletion criteria A7, G11)
That way, people can more easily tell whether there was a significant amount of content. Sometimes if there was a lot of content, people wanting to create a new version of the page like to ask sysops for a copy of the deleted page so they can use the information as a starting point in their research. But if it was only a few bytes, then it wouldn't be worth bothering with.
This data should be stored in log_params.