For esbit I use a titanium Caldera cone with my default pot, a Titanium Snowpeak 900. The cone works (as intended) with the included alcohol stove, with esbit, with wood fuel, and even as a windscreen when using canister stoves.
In that last configuration there is sufficient friction between the cone and the pot so the cone stays with the pot, elevated a few inches off the ground. Thus the canister and stove do not overheat. This configuration is not recommended nor approved by the cone maker as far as I know..
I find that alcohol and esbit do not put out sufficient heat in the winter to quickly heat cup after cup of boiling water for my small group. So, In that season, I can use my Snowpeak canister stove and still get the benefits of my Caldera cone.
I tried various foil windscreens, but IMO they look hobo, and take much longer to set up neatly than a cone.
When weight is not so critical I still take my jetboil, such as on a car trip or 'extreme picnic'.