Speaking more as an Epilogues enjoyer than an enjoyer of base Homestuck, I think that reading ryukishi07's classic episodic VN Umineko no Naku Koro ni (2007-2010, lit. "Where the Seagulls Cry") is good for the health. It has a similar kind of metanarrative premise to postcanon, and being familiar with how it conceptualizes these same concepts can be really interesting. (Plus, Beyond Canon has already referenced it outright in the Meat scenario, so it is technically an influence now.)

Make sure you use the 07th-Mod fan project to restore the excellent voice acting and switch the presentation from "adventure" (tiny text box at the bottom of the screen) back to "novel" (text box covers the whole screen) for best results!