I'm currently into quick wear system novels similar to https://www.novelupdates.com/series/quickly-wear-the-face-of-the-devil/ where there were arcs/period for every world the MC has to go through (usually with help of their 'gold finger' system but that's optional) with or without real plot for the MC's "real world" in between. I just realized that most of my system novels are either; 1) BL 2) ongoing. The completed ones in my mind are all BLs (great work, Rottens) which made me wonder if there's any good translated BG quick wear novels that's completed or regularly updated?
I’m not sure how “quick” it is, since it took over 70 chapters for the first arc to end, but there’s “Quick Transmigration: Rescuing the Blackened Male Lead.”
Quick Transmigration System: Male God, Come Here - Update regularly, though in batches Side Character Transmigrations: The Final Boss is No Joke - pretty interesting, updated every couple days or so
Set these aside for later, after they start updating more frequently or get further along: Quick Transmigrating Second Female Lead’s Counterattack Coming of the Villain Boss! (This one is on webnovel, so feel free to find a diff site for it ) Sinister Ex-Girlfriend