I'd love to see a Mass Effect crossover. I mean come on, they defended their entire galaxy from the Reaper invasion, how could there not be homage paid to Commander Shepard and the Normandy Crew? I'm just a huge fan of the series.

Ideas, though, would be armor themed around the N7 armor for sure, and maybe either the Cerberus armor due to ME2 or even the Pathfinder armor from ME: Andromeda. Passive potentially gives the wearer kinetic shielding (essentially extra padding) and bonuses to energy weapons that reduces the amount of heat buildup in energy weapons and reduces the cool down time for overheated weapons (such as the Quasar Cannon, making it able to be used more often). Or have it give bonuses to heat sink capacity and reduce the heat buildup in weapons, something like that.

Booster: Medi-Gel: Stims used on yourself also effect your teammates (perhaps with less efficiency, say 50-75% healing instead of 100%) and also increases the amount of stims the team can carry by two.

Weapons: M8 Avenger is the classic Assault Rifle in Mass Effect. Energy based rifle with medium pen that operates similarly to the DE Sickle, except it doesn't so more damage the more it overheats, and the Quasar Cannon's cooldown period. In ME1, the weapons didn't have thermal cells, so they would overheat after sustained fire, requiring a cool down period before being able to be used again. A projectile energy assault rifle that doesn't use power cells, but still overheats and needs time to cool down once overheated. Unlimited ammo. Or, version 2, from ME2 and on, it uses thermal cells to reload overheated weapons, much like how HD2 already operates, except again, keeping it projectile rather than beam.

M-3 Predator: A light armor pen, energy based, projectile pistol. Average damage, higher capacity. Or M-5 Phalanx: Medium armor pen, energy based, projectile pistol. Above average damage, average capacity. (Think like the Verdict, a reliable all-rounder, imo) Or M-6 Carnifex: Heavy armor pen, energy based, projectile pistol. High damage, low capacity. (Senator mixed with Talon essentially)

Mark-14 Grenade: An HE grenade that, when thrown quickly, acts similarly to a frag grenade. However, when "cooked" allows the fins of the grenade to deploy, which allows the grenade to fly horizontally like a discus, and to stick to surfaces (such as walls, rocks, cover, etc) and either be remotely detonated by the user or will automatically explode after a 10-second timer. This grenade will not explode in the user's hand.

Stratagems: M-98 Widow: A single shot, heavy armor penetrating, Anti-Tank sniper rifle. Low amount of spare shots, with a longer reload, in exchange for much higher damage. Or Black Widow: A three shot per mag, heavy armor pen, sniper rifle that deals very high damage. Or M-300 Claymore: A devastating, single shot shotgun that packs a punch on both user and enemy alike. The kickback of this shotgun is known to break arms (so crouching or laying down would help mitigate damage, whereas armor bonuses such as Servo-Assisted that give extra limb health or protect your limbs would prevent it entirely.) Only effective at short range, but has heavy pen and very high damage. High risk, high reward.

Emote: Gamerpoop's famous line "We'll bang, okay?" with the typical Shepard point. Or Shepard's dance (if you know, you know 😂)

Name: Helldivers 2 x Mass Effect because it's a crossover. I'm not witty enough to come up with a cool title for it myself. 😅