Back in BO3, you had to unlock the specialist weapon or abilitie during the match, it was also map exclusive (except for the Ragnarok DG4).
BO4 changed that so now you can spawn with a specialist weapon and you could choose which one you liked (depending on if you were playing on a Aether map or a Chaos map) and during the game, if you used your specialist weapon, you upgraded it, becoming more powerful and unlocking more abilities.
CW changed this concept, instead of being weapons, they were just field upgrades like the aether shroud, frost blast, energy mine, etc and the upgrades were like in a skill tree were you earned crystals in-game and you can use them to improve the field upgrades.
Later on BO6, gave us the augment system and that expanded how you can use the field upgrades, giving them more variety.
My question is: Do you prefer having the field upgrades or do you miss having specialist weapons? and do you prefer spawning with it or unlocking it during the game?