Given that the promised content is estimated based on me and Chestnut's playthrough, your plot will always lack accuracy since looking at your experience of the content of the game and comparing it to the amount of content promised is likely to only demonstrate the difference between our playstyles.Aaanyways. I just had an idea to plot the proportion of promised content versus the amount of actual content. It would be fun to do this for ver 0.4 and onwards, to see if it's actually going up. I have a suspicion it doesn't.
Besides, quantifying content is not straightforward (at least not to me). Playtime is a common yardstick, but is it the most relevant? Or perhaps the number of quests or the number of sexual scenes, both of which are more objective. Or something completely subjective like how much 'fun' you had versus how much fun you were promised to have by the hype machine.
Lastly, about the promised content, when I played the 0.4 version (and mentioned here that it felt like it had more content than 0.3), it was earlier in the development, and I think I said I didn't want my estimates to be taken as a 'promise' as things do change. We have said on our Patreon page (and elsewhere) that 'Each release will have around 30-40 mins of gameplay', and until we have tested the finished product, that's the official promised content.