Glad you enjoyed it! I think your analysis of red decks, and aggressive decks in general, is on the money. Against the slower, durdly midrange decks, your best bet is often to go under them, by playing enough cheap threats to keep them on the back foot all game. I find that having an ultra-low curve is paramount to succeeding at that goal. Take a look at the red deck that won the last draft we did:
http://riptidelab.com/forum/threads/decks-that-have-3-0d-your-cube.47/page-2#post-1074
It looked to me like your deck did a good job of sticking to a tight curve, though I didn't see exactly how it was laid out. You probably could've used one or two more burn spells to nug opponents hanging on by a thread, but I don't think I would've done too much differently from your seat. Red was definitely the right colour to be in, considering the only other primary red drafter was across from you! Not playing those mana elves was probably the right call, because from what I could make out, you were really essentially an RDW deck with a light splash of green.
On
Night's Whisper - and not to dredge up the whole back-and-forth we had - I still wouldn't play it in an ultra aggressive deck, like the one I linked to. I find that reach and tempo are far more important to the aggro decks than draw spells and card advantage. I mean, nobody's turning down a Bob for their attacking decks, but by the same token,
Mulldrifter might not have a place in a
Delver deck. That's kind of how I see Night's Whisper - something to boost the (admittedly bad) "combo" decks more than a aggro deck hand refiller. Not to say it can't play both roles, of course.