As we know, we have gotten peak (Triple Barrel Blunderbuss my beloved) and the first new weapon in the loot pool in what feels like years!
I think as new weapons are introduced and when they sadly leave the game, it would be a good idea to introduce a rotation for limited time weapons that release in the future. It's a good way to keep the weapon pool fresh while making sure it doesn't get too overfilled!
For an explanation: Limited Weapon #1 is in the pool for maybe two weeks give or take; After two weeks pass, #1 is rotated out and Limited Weapon #2 takes its spot. Then another two weeks pass and it get swapped out with another weapon!
I really enjoy the Blunderbuss and deeply wish it would come back in a more permanent form, like how the LTMs (Bwoking, SvR, and Mystery Mode) were eventually changed into rotational modes. We'll miss this weapon once it's gone and I'd love to see it be preserved in some way