Deletion of Greg Street

Comment: He's the systems design lead on the biggest top-shelf MMO in the Western market; he's pretty much as important in the field of MMO design as it's possible to get.  He meets  criteria 1, 3 and 4 (no small achievement!) and should be kept.  Which leaves the issue of sources.  There are plenty of reliable sources; I think your issue may be that many of them are largely dedicated to coverage of WoW (which is exactly where you'd expect to find mention of him), such as http://www.wowinsider.com/tag/greg-street/ here and http://www.azzor.com/content/2009/07/world-of-warcraft/greg-street-ghostcrawler-talks-paladins here.  But looking further afield, there's coverage at http://www.gamingshogun.com/Article/5149/Interview_with_World_of_Warcrafts_Lead_System_Designer_Greg_Street.html Gaming Shogun, http://www.azzor.com/content/2009/07/world-of-warcraft/greg-street-ghostcrawler-talks-paladins azzor.com, http://tech.metro.co.uk/page/designer-world-of-warcraft Metro.co.uk, http://play.tm/wire/2773174/interview-with-world-of-warcraft-s-lead-system-designer-greg-street/ play.tm, and http://kotaku.com/5141958/blizzard-we-probably-over+nerfed-hunters Kotaku.  Also a huge amount of coverage on reliable, dedicated news sites like wowinsider.com
Stance: keep
Cited policy: Wikipedia:Notability (WP:CREATIVE)