sHP: low HP, high recharge. Recharge delay.
aHP: high HP, low repair. No repair delay.

Good shield tanking is abusing high recharge, by lowering the delay as much as possible whilst adding a small buffer to have acceptable eHP.

HOWEVER. To be an effective "true" shield tank, almost all your slots are dedicated to survival. Unlike armor, which can have some leeway in aHP mods because of high eHP. This is why armor tanking is the preferred fit, it's easier to pull off.

I only have a CalAss so, i can't talk about armor fits as clear as shield fits.

But I'll get to the point. There are 3 ways people shield tank in the game:
-Buffer tank (mostly/all extends, lower recharge with regs as much as you can. High sHP offsets low sHP/s for fit)

-Recharge tank (half extends to give acceptable buffer, half energ/recharge to give high sHP/s. REGS are a must to abuse the sHP/s as much as possible. Very high sHP/s offsets low sHP per fit. Rarest fits to see. (best tank style IMHO, cover when low on shields, 2.05 seconds later (two comp regulators) 70+ sHP/s is pouring in.))

-incorrect tank. aHP is high. while either having a recharge tank/partial buffer fitted. This is simply wrong. I use this fit when there is a reptool in squad, makes me use my triage hives after all.

Oddly, brick tanking works. Sadly only for a few engagements, and not at close range at all (no speed to move with the penalties of plates.) Also, using one reactive + one regulator is the best way to "hybrid" tank (but duel tanking is not really a good thing)

But to be so thoughtful of your sHP is something people don't want to do. also, knowing when "you're on armor you've died basically" doesn't support the lower eHP shield tank suits, nevertheless.


(To be similar to the OP, I'll talk tools)
As for tools for shields, i want it to be like the reptool. IMPROVING THE FLAW OF THE TANK.

See how reptools increase the aHP/s? That's the flaw of the tanking style; Low HP/s.
Shields have the higher end of the HP/s for the main tank. What the flaw is, is low HP.

So i thought of shield tools increases the sHP by X amount and lowering the delay by Y amount.

Essentially a hardener per se, for example:

I have 425 sHP, and 75 sHP/s. I have around 4s delay.
Shield tool arrives. +50% sHP, -25% delay.
Now when tethered, i have 637 sHP, 75 sHP/s, 3s delay.

Let's go to a full buffer tank. It's proto suit, all mods for shields.

I have 707 sHP, 30 sHP/s, 1.6 second delay.
Shield tool arrives. +50% sHP, -25% delay.
Now I have 1060 sHP, 30 sHP/s, 1.2 second delay.

"1060 sHP!? That's insane"
No, it's a big number but look at what I got? A delay. You can shoot me and stop the recharge. Plus it's only 30 sHP/s... One bullet from anything will take out my recovered sHP anyways :/ Plus i just pulled the numbers out of nowhere just for the sake of discussion.

Cool cool?