盐川的Fgo美服相关访谈 提到了月姬活动和saber lion
蘑菇希望月姬活动做成联动形式但是盐川还要再看看，saber lion不太确定，但是我们（
staff）也很希望有一天能实装她
http://t-ono.net/interview/fate/go-director-yosuke-shiokawa-interview-sakura-con-2017.html
以下原文的最后一段
TONO: Finally as the last question, will we ever be able to see a Saber Lion s
ervant or a Tsukihime collaboration event?
When it comes to Tsukihime, even Mr. Nasu would love to do a collaboration, bu
t we will have to see. For Saber Lion we’re not quite sure... but we do hope
to have her one day! [laughs]