Note: This is not a request to create an input method to convert pinyin to Chinese characters, which is being tracked at T180053.
In Wiktionary, I constantly need to fill in the transliteration field, which needs the Pinyin of the word/character (e.g. zìmǔ for 字母). There is no convenient way of inputting Pinyin other than copying from other pages or using special tools.
It would be great if an input method dedicated to input pinyin (mainly the vowels with tone sign) could be created.