Is playing the campaign on an alt worth it?

[Onlychief]

Newbie player here.

Finished the campaign on my Titan. Played other game modes and slowly gaining a higher light level. Got the season pass and been playing through that as well. But I really wanna try out the warlock class. I know I can transfer items to other characters to increase the light leveling process. Can I still play with the warlock and skip the campaign entirely? Or will I be missing out on important quests afterwards that are important for other gear or raids.

Hope this made sense. Thanks for any help.

[Guars]

Pretty sure you get a few powerful drops on WQ Legendary, but if you already have high level weapons, and get a warlock exotic from xur and pass it to your warlock power level doesn't really matter, unless you want to experience the campaign again you can just play it on normal and rush through it.

For Beyong Light, you have to re-grind all of the Stasis stuff anyway at the end

[Dragonwarchief]

you do need to do it on all thecharacter so you have access to the stuff, on alt characters you you skip the cut scenes and such. also you get more items legendary then 3 times weekly rewards.

[Strator]

Each weapon you deposit in your bank with your titan, that got a higher item level than your currently played character weapon counts towards the item level that will drop for your currently played character (base item level). (Im not sure about armor since it's class items.)
Never dismantle a weapon/armor on your character that got a higher item level for the current slot, even if it's just rare (blue), it counts towards your characters powerlevel even if it's not equipped.
Each quest (campaign/bounty) gives XP towards bonus Powerlevels for the season artifact item across all your characters.
TLDR: Playing all three classes (campaigns/bounties) gives you bigger bonus levels across your characters artifacts (shared). (Recommended and for the fun to get knowledge to understand other classes) but it will consume your time though.

Atleast Beyond Light got unlocks for your Stasis subclass in the campaign so it is recommended if you want to explore Stasis. Beyond Light even requires you to grind the materials to unlock the fragments for the Stasis subclass on a weekly basis.
(Sorry for bad grammar, you will get used to it if you try.)

[Nakos]

Sure, you get the same types of drops on your alt as you did on your main.

Which includes upgrade modules.