I think people WAY overestimate how difficult Homestuck would be to adapt. A huge portion of Homestuck's length is gags and chatlogs which are medium-specific. The MSPA format is inherently meandering. Put it in a pure audiovisual format? Many of the gags can be replaced and made snappier, many of the sideplots can be condensed, and dialogue can be way quicker thanks to visual shorthand which isn't usually possible in an MPSA format outside of like a 10 second gif or a flash without any dialogue anyway. Homestuck is genuinely very adaptable as long as you are willing to take freedoms with how key information is presented or ordered. The issue with the books is that they weren't an adptation, but instead an attempt at a 1:1 release. The main issue will be the amount of characters, but with a solid runtime (hopefully longer than the pilot seems to have), that can be handled well too. It should go without saying that they've already thought long and hard about how to do this, or they wouldn't be doing a pilot at all.