In addition to excursuses of Korean language and Chinese language(simplified) on nameplates of all the stations, Nankai is going to introduce numbering of all the stations. The numbering includes all the stations on Hankai lines, on which streetcars run.
The most interesting thing for railfan is that missing numbers can be found between Higashi-Minato(HN 26) and Ishizu(HN 28), and between Funao(HN 29) and Hamadera-ekimae(HN 31).
This may indicate new stations will be added.
Citation: http://www.nankai.co.jp/company/news/pdf/120223_1.pdf (Nankai)
http://www.nankai.co.jp/groupinfo/news/pdf/120223.pdf (Hankai)