Thank god the lasers don't look like ass, unlike their SMG pack. I rarely see people talking about the mods they use, so here's an info dump of the ones I find manage to keep this game still sort of fresh:
A from-launch mod that originally removed a ton of long animation delays that were associated with most abilities and actions. I'm not sure how much it still does after the patch that added Zip Mode (which, by the way, you SHOULD be using), but I still use it.
Self explanatory. A nice convenience for when you are camping on the maps without timers, or if you use a mod that extends or removes timers.
A serious MVP QOL mod. Removes all those slow camera panning effects and delays when moving between base menus and rooms. Also has the effect of making the geoscape feel like it is performing a lot better.
This one is fantastic. Once you've played with it for a while it feels like it was always intended to be part of the UI. Knowing exactly how much time there is left until a scan site will disappear forever is a game-changing feature, but in a good way.
This one is even more optional than Overwatch. I wouldn't say its crucial, but if you like moving all your soldiers into the evac zone before giving the order to evac you might like the convenience.
In vanilla XCOM 2, the reload animation for every particular soldier has to finish playing before the next queued ability will run. This fixes that oversight. Absolute 100% required mod for multiple playthroughs unless you love having your time wasted.
A purely cosmetic mod that lets you equip your soldiers with the looks of any armor in the game, regardless of what they are actually wearing. This allows you to use NPC-only outfits, too, like the high heels some NPCs are wearing or the suit & tie outfit seen on VIPs or the newscasters during cutscenes. There are alternatives to this one, but I like it best.