The top-down messaging feed was not really a design decision, but rather a consequence of using the built-in VirtualListView component which came with ReactXP. I tried to modify the component to make bottom-posting possible, but the results weren't good enough (animations were very choppy). I am planning to port Quadrix to pure react-native / react-native-web at some point, which would allow me to use more flexible list components (such as FlatList), but that might take some time.
The top-down messaging feed was not really a design decision, but rather a consequence of using the built-in VirtualListView component which came with ReactXP. I tried to modify the component to make bottom-posting possible, but the results weren't good enough (animations were very choppy). I am planning to port Quadrix to pure react-native / react-native-web at some point, which would allow me to use more flexible list components (such as FlatList), but that might take some time.