If you watch carefully, when "Momochi" says Yurushite nyan with Ishida, Reina actually leads Sayu over by the arm to put her in pushing position. I like that sneaky Reina!
Speaking of Daaishi, she has a kind of golden-age Momusu sensibility to her. They need to push her forward more. I think a good aspect of Mobekimasu is to kind of shake up the established order a bit and let the girls jockey for position based upon merit, instead of just the predetermined seniority roles that many of them have had for well over five years.