|The white edges are because I'm a fool. I didn't turn off antialiasing on my selection tool. I suck.|
So I've done, what I feel, is an admirable job in researching the pros and cons of both Brashmonkey's Spriter and Adobe Flash's Bone animation. I made a real quick test in Spriter and imported it into Construct 2. Much to my surprise, the blocky pixels where small enough that their rotations weren't terribly noticeable. I was already beginning to lean towards doing the whole thing in Flash, but now I'm not so sure.
Looks like I'm going to have to test both. Luckily, someone created a Flash exporter that converts to the Spriter file format: Shporter.
This is kind of a relief, because the thought of rigging and animating the same walk cycle in two separate programs was bumming me out. I'm studying up on the bone tool and tweening in Flash, so hopefully I can run a test real soon.