I heard that group was known for being trolls. Try not to get your hopes too high up.
Anyways, Real Imouto ga Iru looks like a great comedy VN, so that's something to look forward to. Theoretically speaking, if the translator's english is good enough or he gets really good editors, no one will know that it's a inaccurate translation.
Also, I know that Yandere is probably just a terrible niche game, but I want to play it!! Nice to see that the translation's moving along.