Usually in small groups from a big company all the members are quite iconic, say blackpink for example, all the 4 members standout on their own very much and are quite iconic. Lisa and jennie dont need any explanation but even the less popular member like jisoo is iconic for her 'korean beauty' kinda thing and rose is iconic for her vocals
But when we compare aespa members to blackpink members, only karina and somewhat ningning seem to standout but Giselle and Winters are really meh, even if they were not in group it would not matter in any way, they just don't have that it factor, winter is average at best and Giselle is very significantly below average, kinda makes sense she only debuted because lee sooman and Giselle's aunt are dating or something but still. If sm choose any two other better members instead of these two then maybe aespa would be way more powerful imo