Hello. My favorite content in MMO games is PvP so I'd like to see various options of that. I'll write some ideas below:
1.ZvZ - game will be based I guess on journeys but it would be great if there would be some events or special arenas where ZvZ could exist. In my opinion massive PvP is fun content and good option for guild wars. Idk what is your solution for guild wars but I think massive PvP is worth taking under advisment
2. Benefits from being in a guild - on your site you wrote that gaining Fame and winning journeys will allow players decorate and build house guild or sth like that. It is cool but players would engage more in game if building a guild house and some other buildings will give them some bonuses like for example: more gold, more fame, crafting bonuses etc.
3. Journeys in alliance with other team - as it is written I guess it can be another option for alliance and wars system. Co-operate with another team in journey and together reach the target. For example it could be matches like 2teams vs 2teams.
Alright so it is the end for now. I would right another post when I will come up with some new ideas.