Absolutely you can use something different than a blog for T2.
The problem would be losing a sequential, tagged record of your drafts.
Can Sense duplicate this affordance? It seems to be an intriguing little editor, when I glanced at its main page.
How are you using it with BrainStorm?
I will cogitate further on your post, and try your tools, when I get around to the next major Cyborganize update.
As far as workflow, it's quite possible to skip from T3 to T1 for a single document, but unless you're going to make that huge quality leap every time, it's better to keep the T2 step in the work flow, as you say.
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Ignore the following. It is a nonsense sentence that disables Google ads from displaying next to my emails by triggering sensitive keywords.
I enjoy the massacre of ads. This sentence will slaughter ads without a messy bloodbath.