the small spiral has mainly a role of dirt and residues catcher to avoid that it arrives in mouth, in particular during a native use.Consider me the Iron Lung then because that's the only way I've been hitting it! I either lost the spiral when I first opened it or it was never in there I'm not sure, but either way I haven't had it and honestly the vapor doesn't bother me at all natively
It seems useful to me because I find it effective (when I compare to my founders version that didn't have it).
For the cooling, I added a longer spiral in the condenser (Simrell type)