At the moment (as of 2009-04-25) there are 75,484 pages in the template namespace (of which 50,267 are part of the COM:POTD template system).
Some of them are language-neutral (like Template:@) or language-specific by purpose (like Template:Information/en), but most others should be localizable (for example by using Template:Autotranslate, see Commons:Template i18n).
But that's not the sole task of the WikiProject. It too cares about making templates as generic and reusable and non-redundant as possible (as long as this does not derail usability and user-friendliness too much).
- Deleting unused and redundant templates (and template redirects).
- Merging templates having the same purpose but achieve it for different languages.
- Categorization of templates
- Removal of user-specific templates and replacing them with standard templates (of course without losing information).
- Streamlining of existing templates to make them use machine-readable parameters that allow easy localization (for example changing dates from "Nov 9th 2007" to "2007-11-09" or "german" to "de"
- Make sure language-specific autotranslation templates are not transcluded directly to pages.
- Sanitize and standardize templates
- Slomox (talk) 02:03, 10 January 2009 (UTC)
- Multichill (talk) 10:41, 10 January 2009 (UTC)
- Wuzur 17:25, 13 January 2009 (UTC)
- Rocket000(talk) 18:49, 19 March 2009 (UTC)
- ViperSnake151 (talk) 21:30, 6 April 2009 (UTC)
- Jarekt (talk) 13:13, 15 May 2009 (UTC)
- --The Evil IP address (talk) 19:53, 4 August 2009 (UTC)
- Rehman 14:15, 13 January 2011 (UTC)
- Category:Commons templates
- Commons:Template i18n
- Commons:Template standardization (about standardizing the design of templates)
Comparable WikiProjects on other projects 
dsb:Wikipedija:Projekt za pśedłogi · de:Wikipedia:WikiProjekt Vorlagen · en:Wikipedia:WikiProject Templates · eo:Vikipedio:Vikiprojekto Ŝablono · fi:Wikipedia:Wikiprojekti Mallineet · fr:Projet:Modèle · hsb:Wikipedija:Projekt za předłohi · ja:プロジェクト:テンプレート · mr:विकिपीडिया साचे सुसूत्रीकरण प्रकल्प