Hope ya guessed what i would try to adress with the title: Weapons and equipment.
In Mordheim, the equipment was kept simple yet it was good. Every weapon had a unique utility and you could use them on specifical builds for certain characters. But i want to adress something aside from the melee weapons, since if they keep the Mordheim system, it's going to be fine (I still want Flails to be Unparriable with swords.)
Necromunda classified ranged weapons in Pistols (Needle pistol, Las pistol, Hand Flamer...) Basic weapons (Autogun, Shotgun, Lasgun...), Special weapons (Flamer, Melta-gun, Needle Rifler...), Grenades and Heavy Weapons (Autocannon, Heavy stubber, Plasma cannon...) Each one has unique features that we all probably want to see implemented (like shotguns using different kinds of ammo and varying in range and effect depending on the ammo, having the option to shoot a max power shot with plasmaguns...).
As well, i hope to see what we all want to see: using pistols in melee. I don't think we should think too much about this one, but it's a must have in Necromunda. As well, i also hope to see some mechanics used with heavy weapons in order to balance them (like needing to use some Strategic points to set up the weapon before firing, ammo consumption, etc...). As well, we should have to manage the ammo in the weapons (like in Xcom, even if i don't want to mention that game) and need to pass the ammo rolls every time we reload the gun. As well, i want to see the weapon attachments for ranged weapons in the same way we had runes in Mordheim.
When it comes to equipment i hope we see more variety between Cloth/Medium armor/ Heavy armor. The distinction is not bad, but I kinda want to see armor with special effects like the Camaleonine (which gives ranged resistance) or Mesh armor. As well i think we should have a separate accesory slot aside from the headgear piece.
This is mainly because there is equipment in Necromunda that could be used while wearing a helmet and those accesories wouldn't give a benefit as big as wearing the headpice that would change it. For example, we could be able to equip one of our gangers with a Filter Plug while wearing Infra-red goggles. The Filter plug would give the character a mild resistance to fumes and toxic gases, but he wouldn't be inmune to them as if he wore a rebreather, which would be a headpiece gear. Same could be applied to the Photo contacts, which would grant some resistance to photon grenades, while the headpice (the Photo visor) would grant the character inmunity to such grenades.
There can be also some other accesories that would give some benefits to the gangers, like an ammo belt that would eliminate the need to reload your weapon at the cost of -1 meter on movement range or the Bio Booster, that instantly heals 20-30 Hp when the health of the fighter falls below 25%.
I think talking how to implement equipment is very important, since Mordheim set a solid basis as how melee weapons are, and Necromunda should work more on ranged weapons as well as other pieces of equipment, since there are a lot of options.