That article sums up my feelings abouts ASE
ASE's sexiness and ultimate fan service is what makes them stand out to me from the zillions of other idol groups. The clothes play a big part in this; ZR, black socks, cleavage, etc. They combine it flawlessly with tons of cuteness and a bit of corniness as well. I'm just a basic guy and I'm a sucker for all of those
On the other hand, their sexiness, the maid ventures, etc. makes ASE quite niche. I used to think AKB48 was for pervs, but somehow ASE filled the gap they left behind. This means their merch is expensive and you can't openly be an ASE fan
It's a difficult cycle: their "image" makes them stand out, yet it prevents them from appealing to a larger audience.