Am I the only one here who gets sad everytime I see pictures of the former trio?

Absolutely (Zettai) NOT! I'm with yah man, all the way! I was so thankfully blessed and fortunate to had seen the amazing "classic" Babymetal line-up, with Mikio and Yui, and will forever regret not seeing them at Sonsiphere Fest. 2014, and in Japan (any show). I continue to feel really raw about losing our beloved Angel of Dance/Tomato Princess. It's ONLY just been barely over 3 mos since Yui's resignation... not even enough time to marginally recover from such a monumental loss, let alone "move on". Yuimetal was/is always my favorite, and imo more Metal than anyone in the group x'cept for Koba. Her Metal growls and screams were Superlative, and a Testament to her Metal superiorty! ;) The SG videos only endeared me to Yui and co., evermore. It opened me up to world of fandom I never knew, or thought I would get into. I fell hard to it hook, line and sinker. Then to see these three grow from Lil Kits in a Koba ambition driven side project (SG Heavy Music - Juonbu - Club), to full fledged Kawaii Metal Princesses and a Queen... what Koba created was just way too perfect. Something had to give and tragically it did twice! As some have said I hope - beyond hope - Yui will return, as long as she truly wants to, or at the very least do some re-union shows. I won't ever feel the same joy, or move on from that perfect union, but it doesn't mean I'm resistant to seeing what new stories, legends arise out of the set backs of Babymetal 1.0.

/r/BABYMETAL Thread