We already have nano, desu and Nana robotic speech style so I don't know why people get crazy this time.
She's balancing the oppai loli ratio so I welcome her wholeheartedly
There is no real meaning for those words. In Japonese, Speak short and in the mark is considered rude, so they add somo words thats sound pretty or at least aggressive?
For exemplo, to speak in a formal way you need just add "desu" in the end of your sentence. "Desu" is abreviation for "Degozaimasu,", "Degozaru"
Just think it like "dattebayo" from Naruto
Thought you were joking with that question, my bad. It's just a polite speech copula that isn't translatable into English, so you either omit it or leave it in. I decided to leave it in as I'm used to her speaking this way from the Web Novel. If it gets too tedious I'll reduce the amount it appears in the future, however, I refuse to outright remove it. Desuwa is a part of an ojou-sama trope and I believe it should be there. Some may not like it, some will, in the end it's a preference.
@Heike one part joking, one part curious. Mostly curious.
I don't agree with you, but at least you have a reason, rather than something like "it sounds cute and reminds me of my Japanese animes!!"
So that's nice.