Currently Eyrin's Haste is a poorly designed tactical that nobody really uses apart from in extremely niche situations. The fact that using instant thundering blast removes ALL your instant lightning bolt procs turns the tactical from a mobility increase to a mobility decrease, making it fairly useless. It should be redesigned in one of two ways:

1. Make instant TB require 3 stacks of convection but only consume one, thus preventing instant TB spam but keeping lightning's base mobility in tact (let's be real, standing still to cast 5 lightning bolts in a row isn't an option for anybody. Mechanics are a thing in PVE, and melee classes are a thing in PVP).

2. Split Eyrin's Haste into two tacticals:

a. Force speed grants Eyrin's Haste, causing your next Thundering Blast to be activated instantly and deal 20% (or even 30%? snipers get 30%!) more damage.

and

b. Force speed now grants 3 stacks of convection. Activating lightning bolt with convection causes it to deal 10% (or more) more damage. (I would love if this could have its damage scaled up to be competitive with stormwatch. It sucks that that mechanical atrocity is our only option for dealing decent single target damage.)