But who really goes by their middle name?
err... my son, my dad, my brother, my aunt, my grandfather, 3 of my 5 closest friends at uni... its exceptionally common for people to go by middle names most people just dont notice because its not something that is specified when meeting someone
I also have 7 friends that go by both their first and middle name
the OP asked for opinions yet it seems that really means agree with the masses, I have NEVER like the idea of children sharing the same name as you could see from anyone who asked that question on here, it just seems lazy and uncreative imho when their are millions of great ways you could honor someones memory with out just recycling the exact same again and again and again
what if you go on to have more daughters (you can say you finished but you can never predict the future) are you going to have say 5 little roses running around... it will forever be odd to me
other ideas: you could look for variants (long hand, country/language, meaning) or a name is the only way to honor someone you could use their birth month, colours linked to them, place they where born etc...