I made a batch with the revised Schmoylent sample today, and shared it with my girlfriend (who has been drinking Schmoylent occasionally).
I'll do her reaction first:
I don't really like it. It was better before.
I'll be a little more nuanced... I don't dislike the new formula per se -- it is definitely less sweet than the previous formula, which may be a plus, depending on how you look at it. However, what I don't really like is the increased thickness of the drink as compared to the previous formula. It's slightly more smooth, but only because it's all sand, if you know what I mean.
Rice flour sounds much more 'normal' than maltodextrin, so intuitively I'd think the former is healthier than the latter. My intuition isn't always very accurate, though But to be honest, based purely on taste, I actually prefer the 'old' Schmoylent, unless you can make it a bit thinner/less sandy.
If you have any questions, don't hesitate to ask!