I wouldn't be so harsh, as I know what it's like working on a product and having to update an old one in the meantime. I also know you guys actually fixed an important C3 bug really quickly in the past couple months. Thanks a lot for that, it was a big deal to me.
But yes, it sounds like the right time to make a C3 runtime version of Spriter. This is basically the only thing which stops me to switch to the C3 runtime, and I really would like to use it. And I'm not the only one in this case, far from it. I'm sure this would be greatly appreciated by the whole Construct community.