Relevant changes required first:

The Uprising 10% damage buff to all weapons needs to be removed. Those who want more damage should spec into assault, specifically Gallente. Relevant to Gallente assault bonus proposal.

WP rewards for armor repair from injectors and repair tools should be proportional to armor HP repaired. Right now you make more WP from reviving someone with a crappy injector, and then repairing their armor with a crappy armor repairer to get more WP; making WP rewards for armor revived/repaired would fix this. Relevant to Gal logi bonus proposal.

[MEDIUM SPECIALIZATIONS]

Assault bonus: 5% light weapon PG/CPU reduction per lv. Assaults are about offense, weapons should be emphasized.

Amarr bonus: 5% heat buildup reduction per lv for laser weaponry. I love this bonus, no need for changing.

Caldari bonus: 3% range increase of railgun weapons per lv; good for sniper, rail rifle (SoonGäó), & magsec SMG(SoonGäó).

Gallente bonus: 1% damage per level of plasma weapons; AR, shotgun, plasma cannon.

Minmatar bonus: 5% increase in magazine size per lv for projectile & explosive weapons; SMG, flaylock, MD, & Combat rifle (SoonGäó).

Logistics bonus: 5% reduction of PG/CPU of equipment per lv.

Am bonus: 1 armor repair HP/s per lv. As a combat logi (has a sidearm), it makes sense to have a bonus to its own survival in addition to the support-centric general logi equipment bonus. I thought about a drop uplink bonus for Amarr logi, but Am logi is the slowest medium frames; not the best suit for setting uplinks.

Cal bonus: 10% more nanite cluster for deployed nanohives per lv. Nahohives are Caldari (names like Ishukone, & blue), so makes sense.

Gal bonus: 5% nanite injector efficacy + 10% inject speed per lv.

Min bonus: 5% repair tool range per lv + 5% repair tool repair rate per lv. Repair tool is Minmatar (names like Core, & brown). The previous hacking speed bonus was ok, but it would work better on a faster suit with more speed and stamina; logis' speeds &/or staminas are inferior compared to the medium frame

[LIGHT SPECIALIZATIONS]

Scout bonus: 5% profile dampening per lv. No need to change that.

Am (SoonGäó) bonus: X% signature profile reduction for drop uplinks; the sig profile of uplinks are unknown, but the skill should be enough to hide uplinks from scans. Drop uplinks are Amarr (names like Imperial, & golden), & scouts have the speed needed to make the best use of the uplinks.

Cal (SoonGäó) bonus: 5% regular & depleted shield recharge delay reduction per lv. Good for a shield suit. Perhaps an E-war bonus instead.

Gal bonus: 5% range increase per lv of both passive scan & active scanner. Active scanners are scouty, & active scanners are Gallente (names like CreoDron, & green).

Min bonus: 5% hacking speed bonus per lv. The hacking speed bonus makes more sense on a scout because of speed & stealth. It does not make sense for the Min to have a bonus to Caldari knives; even the bonus will get changed to be for the upcoming Minmatar melee weapon (SoonGäó), it would still be odd that it would be the only melee weapon with a suit bonus to augment it.

*There should probably be a new specialization for ninja knifers where each raceGÇÖs suit has a PG/CPU fitting bonus to the melee weapons of that race, & a general bonus to sidearm damage. Perhaps 2 (or 3) sidearm slots, & no light weapon. This is because I know a lot of ninja knifers will be hurt by the changes to the Min scout I propose*

[HEAVY SPECIALIZATIONS]

Sentinel bonus: 3% resistance to light weapons per lv; this is to emphasize the defensive nature of sentinels. The previous bonus to feedback damage reduction would only be useful for the upcoming heavy Amarr weapon, & would be useless to a player who is good enough to avoid overheating (basically punishing skill).

Am bonus: 2% per lv armor plate + shield extender bonus. Amarr are about HP, and dual tank in Dust (unlike in EVE).

Cal (SoonGäó) bonus: 5% shield recharge rate per lv.

Gal (SoonGäó) bonus: 10% armor repairer efficacy rate per lv.

Min (SoonGäó) bonus: 5% more heavy weapon reload speed per lv.

*Alternatively, the sentinel bonuses can be based on their race's heavy weapon instead*

Commando bonus: 5% reduction of PG/CPU costs of light weapons per lv.

Am bonus: 5% reload speed of laser light weapons per lv. Perfect for laser rifle & scrambler rifle combo. The previous bonus was good for tanking, but commandos aren't meant for tanking,

Cal (SoonGäó) bonus: 5% reload speed of railgun and missile light weapons per lv. Perfect for any combo of 2 of the following weapons: swarm launcher, sniper rifle, & rail rifle (SoonGäó).

Gal (SoonGäó) bonus: 5% reload speed of plasma weapons per lv. Perfect for any combo of 2 of the following weapons: shotgun, assault rifle rifle, & plasma cannon.

Min (SoonGäó) bonus: 5% reload speed of explosive & projectile light weapons per lv. Perfect for combat rifle (SoonGäó) & mass driver combo.

@KAGEHOSHI Horned Wolf
These were example, but for a strength in one area, you give a weakness in another, my logi LAV receives a buff to its resistance but has a 50% damage reduction, it is fair in my eyes, I spend more time keeping myself alive and my allies than worrying about having a gunner to kill things. Also, Assaults technically do have a "debuff" when it comes to equipment, they carry one thing while Logis carry 3-4, atm Logis can be better suited to killing, and better suited at being a logi than an assault, it's one or the other when you specialize.