Reversed Analyze graph
Currently, the upper graph describe chance of capturing the territory with X troops. I think about adding option to reverse the graph, so that it describe what chance have my enemy to capture my territory, if he attacks with X armies.
Quite often it's possible to guess / calculate the income of our opponent, so we knew how big attacks he is able to do. But if I want to check, how many armies I have to put to a territory, to defend it against attack of i.e. 43 I need to first calculate 43*0.6=25,8, and then I check in the upper graph for 26, 27, and more defending armies.
With reversed graph, you "Assume enemy attacks with that many armies:X" and you see % chance of losing territory for different amount of defending armies.
And just as it is now, on the lower attacker/defender loses graph, from 0 to 100% attackers losses.

Jurden Seag commented
Not a bad idea, for convenience sake. I just don't have a vote to use for it, so I'm leaving a comment.

Widzisz commented
Link with picture to visualize my idea better, it's just exemplar draft:
http://img854.imageshack.us/img854/3573/2v85.pngUnder "Analyze: Attack" current graphs can be found.