This could be achieved by coiling up the space where the filament travels through
Yes, that’s also what I already mentioned in the other comment…
“Unless you have a coil or something inside the tube heater so it spends longer time in there”
but as I also mentioned, pulling filamennt through a coil will also introduce significantly more resistance than pulling (or pushing if using bowden) it straight, which might be an issue at high speeds and cause under extrusion.
100% agree, the best thing to do is just accept it and embrace the suck, it makes it much easier to deal with.