The brew coat looks pretty interesting, too bad it doesn't work for the Kalita Wave kettle.
Almico about the temp drop. As i said in my post i agree that a temp range is a good thing for brewing but i'm questioning whether the range is too large.
If staying at the rather high temp of above 90C for the full duration of the brew resulted in over-extracted coffee then the bigger french presses and siphon brewers and even bigger batches of pour over should make terrible coffee as they don't get nearly the same temp range as my 280ml pour over. Moving from a brewing temp of 94 to something like 86 might be good for most coffees but i doubt that going from 94 to well below 80 is ideal, at least not for most coffees.
Of course, it isn't a deal breaker by any means. My pour over still tastes fine and it's not like a slightly suboptimal temp range ruins coffee. I'm just wondering if this is a chance to go from good to great with my pour over. And even if it isn't, it would be nice to have more options when it comes to brewing temp.