Pros and cons. Old players were keep paying high prices at every expansion and items become obsolete or too cheap. Players spent millions of gold on arcane pets and weapons and armor. But items become worth less in no time. Similarly leveling and experience gain. Lot of grind used to be there. Now going to lvl 36 is just few hrs. There are many gains to new players. I noticed every expansion is a reset and like a new start. Game dynamics are to be accommodated as game sustainability is important for all players.