Thank you all for your replies! After reading through the 80000 hours website I think the following areas of personal interest could be useful:

• languages (including Mandarin Chinese)
• Mental ill-health (primarily suicide prevention)
• policy relating to: religious ( & lack thereof) freedom, minority protection in the developing world (e.g. sexual minorities) asylum seekers & immigration holding centres
• the mention of desicion-makig psychology research caught my interest; but it sounds quite competitive.