vault of glass and crota had very little mechanics and were my favorite just because you only needed 2-3 people who knew what to do, so it made it much easier to teach and offered those fun clutch moments were 3 or more people died but rather than wiping you just kept going and killed the boss. Post crota raids added mechanics to spur team work, but now no one wants to teach making it difficult for solo players to find teams. not to mention the team work mechanics made encounters frustrating rather than fun.