Missing what Apple Watch users want? It seems for the most part that these are the most common issues: it isn't a phone replacement (no cellular connectivity)

Missing what Apple Watch users want? It seems for the most part that these are the most common issues: it isn't a phone replacement (no cellular connectivity) and the battery life is terrible. For me as a Watch owner the battery life could be better but I don't want or have a need for it to have a cellular connection. Just curious about how the product design of the watch is seriously wrong (same with the iPhone 7 other than it lacking a headphone jack).