I’m keen on seeing whether there is an interest in an (appendix-like) comparative grammar of Romance languages someplace in a Wikimedia project. As I learn languages, I process features by trying to find equivalences (e.g. the uses of en/ne / hi/y/bi~ie in French/Italian/Catalan/Aragonese, where they match and where they don’t; or the use of haber or tener/ter + neuter past participle in Galician-Portuguese/Mirandese/Asturleonese/Fala; etc.)
Automation is helpful — how to promote better microtypography for display purposes (pointedly, I despise having to use U+27 instead of U+2019)