There is one advantage - if you wanna build a stock of cells for power outage/grid down prepping, you can do that cheaper with alkalines, and you won't have to worry at all about self-discharge. And, for what it's worth, I've never heard of Panasonic alkalines leaking. I've got some of those stocked - they have 'em at Dollarama for cheap. I'd like to eventually have my case fully stocked with Eneloops, though (or, in my case, rewraps thereof). Self-discharge shouldn't really be a problem with those.
With how much that plastic costs, no wonder you don't wanna load 'em up with NiMH