[XorNot]

I cannot upvote this enough. The reasoning was solid: for gameplay reasons, ammo worked better.

There's no way to really explain that in lore - but also no reason too: just make the change, and pretend it always was. Players are willing to just go with a solid change like that for solid reasons - you ruin it once you try to explain it in-universe.

[talideon]

I think there was a way to do it better: thermal clips should've been optional. Thermal clips were a fine idea in principle, but being able to vent when you've hit the clip's capacity or have run out of them should've been an option. That way you introduce ammunition without requiring such a massive retcon.

[Andrew_nenakhov]

I despised it so much that I even installed a mod that made weapons behave like in ME1.