As a recent vaper (since 2017) I feel there is still a lot to discover, sometimes looking back -say mesh wicking) and sometimes looking forward (new aio / rba).
I’m curious to hear from more experienced vaper what have been the big “innovations” of significance.
I can think of mesh coils, Ceramic coils, replaceable fixed afc, squonk, tc, Nic salt....
I’m sure I missed lots