I haven't tried out Akeeba Subscriptions for quite some time, but I see what you mean. That would work very nicely.
I know I could put the log table data into Excel, but it's the manual steps I want to get rid of. To me the value is in quickly getting brief, digestible risk/threat information on a regular basis.
If this is something you do become interested in pursuing, I think it would be a significant, marketable extension of the value of Admin Tools -- especially for high value sites, enterprise users, etc.
Here are two actual use cases where Admin Tools has been essential, though somewhat tedious to operate:
1) Identifying legitimate users who are having trouble getting into their accounts or who have been locked out. In cases where they're logging in to spend $300 on average, we don't want them locked out, but we do want to stop the brute force atacks and block their sources.
2) Identify any significant increase in a certain kind of attack, block the sources, and identify the targets -- usually a specific extension. I like to know what the popular targets are, just in case the attackers know something about a vulnerability I'm not aware of.
The better and faster I can identify major attack sources (and block them) versus legitimate users who may need help, the more secure (and customer friendly) we actually are.