I'm really starting to like consumable ammos
Back when I started playing MEA I didn't like the consumable ammos. I rarely found any, didn't have many credits so I couldn't afford them, and lasting only for 3 clips they ran out too quickly. Now that I understand crafting better I'm augmenting some weapons to take advantage of a particular ammo type (like the cryo aug that amplifies the cryo ammo with 100% freeze duration). Early on I used to think those augmentations added the ammo effect. But had I really read the description, I would have realized they only amplified the effect if that ammo was used. Now that I belatedly understand, I'm utilizing the augs/ammo combination for certain weapons, in certain (difficult) combat situations.
Lasting only 3 clips, they are still basically useless on weapons whose clips only hold very few rounds. But on weapons like the Revenant Assault Rifle (around 80 rounds per clip) I find these ammos can really help in a tough mob-type combat scenario. Disruptor ammo can be great for mobs of Remnants, and the incinerate ammo great for armored opponents. I don't use them on a regular basis, but stockpile them when I really need them. I'm finding more of the ammos as loot, and now that I have all those credits (with nothing really to buy) I can afford to buy the ammos.
I do wish they lasted longer than 3 clips (maybe like 5 or 6), and I still don't have much use for the other consumables.