Let me tell you what the breaking point actually was: I only ever really had to restart for updates which I would push back until a monthly schedule. Last time I tried to update, though, the update actually failed, so I wasted not just 1 hr 40 minutes but multiple days of work, trying and failing to fix the issue.

Yeah, actually, it's got the ability to create perspective rulers with snapping, and you can import custom and rigged FBX models which align to the chosen perspective. It's also got a timeline for animation. It also has a Comic Panel creation tool that renders layers in an adjustable box which saves a little bit of time compared to manually redrawing lines and filling the outside.