If you’re hesitant about it, you could always build an event around it, as a sort of one-time-esque thing to test the waters. If it’s successful, you can play around with introducing it more often. You could also ask for feedback too, to see if there are things to improve if you try doing more.
I did that with a paint along. I had been wanting to try it out, and finally did it. Had a nice build up to it, letting people know the date/time (mentioned it quite in advance, and reminded often), what supplies they’ll need, and what we’d be painting. It went really well, so I’ll likely do more in the future! But I never knew until I tried it how receptive people would be.
Though if you mentioned you tried it before with success, sounds like it could be worth investing in 
I do more art than writing nowadays, but this is how I currently have my channels laid out for my server:
My Channels

(With some announcement/welcome stuff above that. But these are all the main chatting channels.)
I mostly want people to build friendships, chat, and cheer each other on. With a bit of my own interests mixed in (Like the language learning, politics, etc.)
For perks, I have posted a couple things that are too small to be an actual Patreon post. Just little nothings. Currently only stock photos, but I’m sure I’ll use it for additional things like random updates, sneak peeks, etc. I prefer my Patreon posts to have a bit more polish, so I can use this channel to be more informal.
I also added a goal on Patreon for a private critique channel.
You could do similar things with your writing. A channel for small snippets, maybe previews of upcoming Patreon posts. A spot where other writers can chat about techniques or tips. Stuff like that 