The Engineers’ Flame Thrower #1 attack has a high attack rate (10 attacks in a 2.25s channel), with each attack doing low damage.
This was great when it first came out, especially for stacking on-crit effects. But as almost all on-crit effects have since gained internal cooldowns, FT#1 has lost almost all the advantages of its high attack rate while still retaining all the disadvantages.
The changes have been gradual but the overall effect is the skill is now considered a liability rather than an asset in PvP and WvW. This last is because the use of group retaliation now means that not only does an engineer using FT#1 suffer more damage than they inflict, but the extreme attack rate means they suffer this damage at a very high rate (often faster than they can react).
Please bring the Engineers’ Flame Thrower #1 attack up to date by reducing its channelled attack rate and increase the per-attack damage to equal its current damage overall.