Renown as a stat is not that important in curent version. It is a requirement for some quests / events, but you need about 20 renown to get them. Only exceptions are the cure quest, kevlar quest and the endings.
These two quests are supposed to be post game quests for people who decided to play one save file for longer than one year and the ending unlocks are challenges for people who are familiar with the game, so I don't count these as unbalanced, since getting these is supposed to take time and require knowledge of the game.
That said, there will be more ways to get renown. The new job system will have some jobs giving you renown and performing / begging at Riverstone will also give you some. On top of that, I will adjust values needed for some of those endings and quests.