It’s interesting to read the variety of responses. Turrets were the big thing I was forgetting. I like to directly kill as many zombies as I can, in part to get the ‘full credit’ for killing them in terms of experience points. But turrets would be a good supplement and a way to use the ammo I already have... once I get everything powered, which always seems to be one of my last priorities.
In prior alphas, I was content to let my specializations emerge organically. First come across a big farm, and then spend points on Living Off the Land. First start a treasure quest, and then spend points on Treasure Hunter. And first find a relatively good gun, and then spend points on the skill for it. A21 doesn’t seem geared to do that. You need to invest in the skill first, so that your chances of finding parts/crafting magazines for that gun improve. It’s required an adjustment in how I play, away from a survivalist mindset of using what comes my way, and a miserly mindset of hoarding my points, questioning if I really need to spend them.