I'm a big believer in following formulas that have worked successfully for others (i.e. I'm lazy).
In Collier's 'will you do me a favor' format he takes the low-key approach of, "I'm not trying to sell you anything... I just need a favor...".
[ of course we know he was fibbing

]
Anyhow, next he discusses his dilemma and how the reader can help.
If I picked apart his copy correctly this is the structure he uses:
- Salutation
- Claim that the letter is personal and does not seek new business
- asks for common, considerate courtesy for a bit of help
- explains his current dilemma and what he has in mind for solving it, all the while plugging his USP
- gives a value proposition i.e. how much something comparable should cost
- then segues back to the purpose of the communication i.e. a favor
- claims wants to test demand
- ask for participation in the test
- offers a call to action
- then makes a seeming too-good-to-be-true offer
- offers risk removal
- builds urgency
- asks another call to action
- thanks reader for their courtesy
- ends with a signature but no PS
I veered away from this format a little when incorporating elements from Harlan Kilstein, Michel, John, and others.
Another area I'm not following is I think Collier sent his letter to his existing customers. My web copy is open to anyone with a browser and internet connection.
So, I'm thinking of maybe modifying this offer a bit and then sending an email to my small list to see if that produces any results. That way my approach is more consistent with the way Collier used his letter.
Other than those two differences I think I copied his low-key approach fairly accurately. Or not.
Unfortunately a low-key approach does leave the copy a little flat and unexciting, as you put it.
In time I'll split test each approach, low-key vs. in-your-face-exciting-copy, to see which works best when emulating Collier. Hopefully both don't fall flat
I guess I will know once I start promoting the offer and testing response.
Thanks again for your feedback. You had several very good ideas that I've used.
Andre