We focus on an excellent weekend experience and three main components of it, worship, host team, and Lifekids. Of course the message has to be excellent as well but we have that base covered with the resources provided here on Open (we are "in-step" with Life.Church). Community engagement is also essential and you need to engage your community in a way that would make them miss your church if it was gone. Requests outside of that sometimes must be met with a no and realignment on doing a few things excellent instead of many things mediocre.
However, we do say we are big thinking bet the farm risk takers. So if others have good ministry suggestions I ask them if they want to take ownership of the idea. If they do we then try to encourage and equip them. But we don't always elevate or promote until we see excellence and consistency in the ministry they have initiated and are owning. As we recognize God's involvement and blessing on the ministry and the abilities of the leader show potential to continue to grow the ministry we will begin to provide more resources and promotion.
Otherwise, you can end up supporting ministries that may start with a bang but can't sustain. But the buck stops at lead pastor so then you are left to rescue or kill the ministry. This is just my approach and there are probably a number of viable philosophies and approaches to this question. So take it and use it with prayerful discernment as in all things. Hope that helps and continued prayers to you and your ministry!