Have you posted pictures of the setups you just described? I can't seem to picture what you're describing.
I just had a flash of something that I think 'might' solve the need to not carve up thee ti esbit stove and still be able to use it for Beer Can (this may be similar to what Vick is thinking, but I can't tell...)
Take a Ultrarod, and form it into an equilateral triangle just big enough to 'hold' the bottom of a beer can, twist (or something) the two free ends together to lock the triangle and prevent it from spreading, trim the excess, now you should have a very light, removable, 'feet' that might stick out far enough balance on the legs of the stove (aka a way to expand the henie pot's 'diameter' a tiny bit).
I don't know if I'm explaining that well, I can see it in my head, but...
Anyhow, if you try it and it doesn't work, at worst you've wasted a single ultrarod.
also, a question. How long of trips do you go on where you just cook a single meal on the trail? I'm curious, since, for me, comfort factor of food rates high on my 'ease of enjoying sleeping' scale when I'm out doors. Maybe a day or two, I wouldn't mind, but I think I'd start getting cranky if I couldn't eat hot meals before I laid down to chill out for the night (aka no more 'work' setting up camp and such)