If this community is going to grow it needs to be in its own merit. Not by trying to get people in from another forum.
Already the only active part of both forums is really the trading. Where it's been expected for cosyfiep to take on new moderation duties which I think span two sites. I'm sure you're fine with it cosyfiep but I imagine it is still extra hassle and work same if people cross post their sell threads to both places.
Guru had a flutter of activity when it was mentioned it was going to close. There haven't really been any useful threads outside of trading for some time. Yes the collectors and traders show off their accomplishments but otherwise there isn't really much to discuss that hasn't already been said.
I don't have an answer just wondering if a large forum is what the game and community needs, if so then how can this one be of a benefit to the community over Guru2 if you want people to use this site instead/as well.
I have seen Reddit GW subreddit be more active in the last few weeks than either Guru2 or Legacy with people posting or discussing things.
What was the plan with Legacy. Was it just 'Guru is closing and we don't want to use Guru2 so here's a forum' or is there a more long term vision?
I think the game and community could benefit from some way to help people find others to play similar content with. It is all too easy to auto move through the game with Heroes now that unless people are put front and centre with others they won't bother, and people are attached to their Guilds and don't necessarily want to move even after the Guild is very inactive.
Just my thoughts, Legacy certainly has the freedom over Guru2 to be anything.