[My way or the Melee! Embarking on the path of the Fire/Earth/Fire.]

This build looks like a lot of fun; I've always wanted to make a /Earth dom somewhat modeled after a Circle of Thorns ruin mage, but this seems even better. Will definitely try this out out.

[What would be the best way to realise the planned Striker AT?]

The striker was meant to use a primary that looks very similar to Assault sets, and a secondary that looks like Manipulation sets but having all it's melee and sustain stripped and replaced with Armor toggles.

 

The inherent was supposed to boost melee attacks as you use ranged attacks, eventually giving you a strong insentive to jump into melee for peak DPS.

 

In theory, if you have ever played Final Fantasy 14, a Striker would had looked VERY similar to Red Mages there, minus the white/black balance. Basically build the buff, then jump into melee, unleash a volley of melee attacks, go back to range, rebuild, repeat.

 

Implementation wise, the secondary would had been problematic, due to how the sets are configured. There has been a lot of thought put over the years on making Strikers a thing. There are a lot of priorities that need to be taken care of before any work is done on the AT, but you could expect it to look more like:

 

Asault-Like primary.

Sentinel Armor Secondary (armor that does not require enemies around you to work.)

Epic pool focused mostly on control (not very strong control modifiers.)

Inherent Striking Force bar mechanic that fills as you use your ranged attacks from outside melee range.

Melee attacks "consume" it as if it was Endurance to strengthen their damage.

At least one Melee attack would work similar to Savage Assault's Feral Charge (activate at range and move in close)

They would have access to a power that will make you "jump back" into range.

 

That sounds like exactly the kind of character I'd like to play; I keep making Doms or Blasters and attempting to play primarily around the secondary, melee-focused power sets while treating my primary control/ranged blasts as if it were secondary. Even if they didn't have the inherent mobility to jump in or out of melee, that play style sounds like a lot of fun.