A idea to improve it would be if it shut down some of the electronics on suits and on vehicles such as Tac Net at the very least needing a 30 second for example reboot, this could also shut down other things the suit has going sheild recharge for ___ seconds, and the exos which assist movement in these suits which would slow you down or stop you from sprinting the exo also absords recoil of guns so if its shut down guns would be rather difficult to control

I'm sorry, but Flux Grenades are already good Grenades of choice.
I use the basic Flux Grenades and they are the only types of Grenades I'll ever use due to the fact they're amazing.

Impact Grenades are god damn awful, there shouldn't even be a variant for Locus Grenades. You can make fused grenades into "Impact" Grenades if you're a competent grenade user. Instead of just tapping the Grenade button, Hold it and wait, time it right and throw, it'll go off instantly.

Your comment about vehicles? Locus and Flux Grenades are not for killing Vehicles, that is why we use ANTI VEHICLE Grenades. Flux Grenades at a basic level will do 1200 Damage, you carry 3 of them so thats 3600 Damage. Me and Hughes found a Tank Driver (Must've been new) with a Railgun, we had Flux Grenades, Locus Grenades and a Nanohive. We chased that guy down, took his shields out and the majority of his armor before just killing him off with a Duvolle. Took us a few minutes but its proof enough we don't need to buff Flux Grenades considering I took off all his shields in 3 hits.

Flux Grenades have a larger radius than Locus Grenades and aren't affected by distance. That means I will do 1200 Damage in a 6m radius, it doesn't decrease like Locus Grenades do, if you're in that Radius your Infantry players will lose their shields.

Flux Grenades destroy deployed equipment. They can clear out mines, Nanohives and uplinks. Can't see that pesky uplink because it keeps disappearing? Chuck a Flux in the General Area, you'll probably take it out. 3 Remote Explosives guarding that objective and you don't want to shoot them due to damage? Chuck a Flux at it.

Before you decide on buffing them. actually use them well. They are quite balanced and probably my favorite grenades in the game.

Edit: a final mention of how good Flux Grenades are. We were fighting next to the Enemy CRU on the 5 point map (Compound with Green buildings?) when about 8+ players rushed a small group of us going towards it. We ran back behind a wall and I launched a Flux. I got a hit marker and my Squad rushed in, I scored about 200 WP from assists in that fight. They died ridiculously fast (literally, got the hit marker, then everyone rushed and it was over in seconds, no casualties).

Don't tell me there is not a realistic reason to using them :P I might not of gotten the kills at that point, but it was worth using them.

Why should you use Flux Grenades?
They're good against both Infantry and Tanks who specialize in Shields. You can do almost as much damage against a tank as you could with AV Grenades to their shields. Took out another tank earlier today with Crafty. Chucked Flux Grenades at it to make it retreat, rolled into an AV grenade from Crafty.

They are not killing tools, they're support Grenades.

See, Flux Grenades have a negative which is it cannot kill an enemy, but their positive is a large radius and instant depletion of shields for infantry and major damage to Vehicles. You ever seen those combined with mass drivers? It hurts alot more than Locus Grenades would simply because of how big a Flux radius is and how much damage it can do.

See I can easily take out 400 HP with a Duvolle in a clip, problem is if I run up against a Shield Heavy, I have a problem. Most Shield Heavies are around 400/400 on both, and despite their movement speed, they can just enough of a Locus Grenades radius to not take massive damage. Instead, lobbing a Flux Grenade at them with a larger radius will instantly deplete those 400 shields allowing me to put holes in that lovely suit.