It was earlier in the year so people might've forgotten about it but Takatsu is a god and 2017 was the year we got the whole best maid tankoubon translated: [Takatsu] My Dear Maid
https://exhentai.org/g/1028362/fc177a1c70/Other strong contender has to be Marui Maru's epic tankoubon: [Marui Maru] Fuwatoro Jusei Chuudoku! | Soft & Melty Impregnation Addiction!
https://exhentai.org/g/1057909/66cc5abebe/And last but certainly not the least, the largest CGset ever translated: [Kawahagitei] Inran Virus | Lewd Virus
https://exhentai.org/g/1106393/6702371b52/