For example, if your operative has the choice between only a bolt pistol and plasma pistol, there’s no reason to not ever pick the plasma pistol, the stronger option just always wins with no cost involved. For example, while you may alternate between a gunner with a plasma gun or a melta gun depending on your mission and the opponent, certain loadouts become no-brainers with the removal of points. One big drawback is the loss of comparison between certain upgrades. While this is a drastic change, I find it overall to still be balanced while also making it much easier to make competitive and balanced kill teams for the game. Specialists have also gone, being limited to narrative play in Spec Ops campaigns.
Despite this, generally specialists cannot be spammed so gone are the days of bringing multiples of the same special weapons whether it be plasma gun spam to frag cannon spam and so on. Gone are points and instead are fixed teams and loadouts, partially limited by what comes in a unit’s box. As hinted by Games Workshop and the Octarius book, Kill Team construction has changed. The Kill Team Compendium book contains all the rules for pretty much all the factions within Warhammer 40,000.