Splitting 0.20 in two parts makes sense. It will probably be the biggest update, and even the patrons probably wouldn't be happy if they had to wait more than 6 months between updates.
Especially given how quiet things tend to get once the update and followup plans roll out.
Yeah, there's talk on discord, talk on streams, but when I'm supporting them through a site that works on a subscription based model, I'd like to get some compensation on said site, not a third party alltogether.
I personally am okay with waiting for these big updates if they tend to focus on mainly one characters story (Eve, Roxxy), since it means the focus is on them, their stories and some side characters involved in that, not an entire place like the School - whose update I found lacking to say the least. However, we are now approaching an ever increasing timespan as the scope of each update seems to grow bigger and bigger. If they reach a treshold of over half a year, I might just change my mind.