I don't know if I'm good enough to give a good feedback on things, but I'll try.
For
MinamiYuki-san's question, in actuality, no.
It depends, actually. The others already gave much of the answers that I was going to bring up so I don't need to say much about them.
Though it certainly is a plus for fics to be in high level English, it doesn't really mean much. Just an understanding in English is okay. Even broken English is. If it has a good PLOT, and a satisfactory in the twists and thrills, then the readers would enjoy reading it.
Be also very aware that high level English could make people confused. Like how I read some AtsuYuu smut the other day and I was flabbergasted by how the writer wrote the story in a very intellectual fashion. Wait, I'm not using complex words now, am I?! And yes, it's pretty meaningless to use harsh languages. I don't know any high-level ones so I'll just use standard and low levels as comparison
"Yuko touched the soft melons of one Kojima Haruna and was immediately hit with a pile driver from the taller girl's girlfriend, Takahashi Minami, causing the happy and satisfied squirrel-like girl to faint in her own lover's arms."
"Yuko touch NyanNyan oppai. Takamina did a wrestling technique to Yuko. Yuko dies on Acchan."
Looks pretty much the same to me
So basically, if you can deliver the message to the readers, then it's already okay.
As for
sakura-san's question...
What genre do you find it easier to write in?
Err... Probably fluff. Like, innocent slice of life or something. I can do most things but fluff is probably something I can think of quicker. I don't know if the readers are satisfied with the fluff I wrote but I myself am satisfied
As for the opposite to the question, I find it hard to write action and smut... Action, because I can't... exactly... transfer what I'm thinking, the fights, to my writing... And as for smut... well... I don't actually have to explain that, do I?
Is it easier for you to write a non-pairing or OTP/any-pairing fic?
... I don't get the question? Anywho, I find it easier to write about my OTP. Well... no... it's easier to write about members I like. OTP or not. For example, my OTP's AtsuYuu and my Kami-oshi's Acchan. I can write about Acchan pretty easily with any of the other girls but I can't write easily about Yuko since she's not my OTP, unless I make her come around with Acchan, then it comes to me easier.EDIT: Crack that. I just understood the question. I think it's way easier to write a non-pairing one. I can immediately think of what to do for this, and that, what happens to them and so on, while using jokes about their pairings. Like Acchan immediately grab Minami's breasts while pulling her away from danger and say 'You haven't grown much in this area, huh?'