Over the years I've posted a ton of Design related articles in various places. It's hard to track them down but I'll try to find the links and put them here.

League of Legends Related links:

http://forums.na.leagueoflegends.com/board/showthr... Good Champion Design (November 2013)

http://boards.na.leagueoflegends.com/en/c/gameplay... Sample Warwick Redesign (November 2016)

Pokemon GO:

https://old.reddit.com/r/pokemongo/comments/6k35rz/idea_gyms_need_to_reward_attacking_and_defending/ Why the new gym system is flawed (June 2017)

https://old.reddit.com/r/TheSilphRoad/comments/9ahvm2/optimal_play_patterns_and_... Optimal Play Patterns (August 2018)