Ranked in these QuestionsQuestion Ranking
Pro Minimal but versatile rules
5th Edition strikes an impressive balance in keeping the rules simple without limiting the creativity of players.
Pro Encourages character immersion
Numerous core aspects of 5th Edition exist solely to encourage thinking in-character, including mechanical rewards for good roleplay and detailed character backgrounds with lasting effects in the game.
Pro Bounded Accuracy
Bounded Accuracy is a core design ideal of 5th Edition. In short, it means the numbers don't get too big; this lets weak challenges remain relevant for longer, and strong ones become survivable sooner. In practice, it also places more focus on a character's inherent abilities and less on magical equipment than has been the case in recent editions.
Pro Free basic rules PDFs
Wizards of the Coast provides free PDFs containing the complete core mechanical rules of 5th Edition D&D (combat, exploration, spellcasting, etc.) and a selection of iconic character options, monsters, magic items, etc. drawn from the full game. Though short on variety, the basic rules are playable and accurate to the full game.
Pro OGL content
As with other editions of the game, much of the content is released under the Open Game License (OGL) allowing custom modification, extension and alteration of the game.
Pro New, Popular & Growing
This is the most recent edition of the game and is the only one for which official content is being produced. Do not expect to see new official adventures or splatbooks published for any of the older editions of D&D.
Con Not much material yet
As of January 2015, only the three core rulebooks and two adventure modules have been published.
Con Lack of granularity
Due to the simplicity of the rules, responsibility lies with the GM to govern the game rather than hard and fast rules.