There really needs to be a time of preparation and teaching before a lot of people can fully benefit from a tacf conference. A prayer soaking conference would be a good first introduction.
That way folk get the teaching behind soaking or marinating in the Holy Spirit, and learn just what is going on when the Holy Spirit comes on them in power and also how to go with the flow. Sometimes mental strong holds and prejudices need to be demolished. But once someone learns to soak in the Holy Spirit and be continually filled with the Holy Spirit, then they want to do what Jesus wants to do more & more.

I remember a preacher once saying That the main reason the Nazi party got control in Germany in 1930's was because the Christian Church in Germany made a covenant outlawing the Holy Spirit. This happened because there were manifestations of the Holy Spirit - revival - that didn't fit in with German thinking and the German way of doing things. The Consequence was something had to fill the void and that was Nazism and the vile demonic spirit behind it. Apparently the preacher used to minister in Germany and had Lutheran Pastors repent and renounce the covenant.

As for pastors who once welcomed the manifestations of the Holy Spirit and now don't. I think it might be more to do with respectability than anything else. I've no doubt they can come up with a doctrinal reason/excuse for it, bit like the pre 2nd world war Germans Christians.

It would be a huge job tacking down people who have been through tacf conferences, It would even by quite a task tracking down those who go through the school of ministry. Many are involved in over seas missions In a sense tacf seems to exist as a resource that is used by the Lord to bring personal revival into people's lives and then they take the blessing with them to wherever. There are lots of friends of tacf, the founding Pastor is John Arnott & his wife Carol. Friends are Bill Johnson, Pastor of Bethel Church. Roland & Heidi Baker they have a big mission in Mozambique. Pat King of Extreme Prophetic ministries, Todd Bentley of Fresh Fire Ministries, to name but a few. There is a free e-book by Heidi Baker about a revival they were involved with in a Chinese orphanage. It's called 'Visions beyond the Veil.' in pdf.

Not sure what you meant by moving on to the next big thing. The whole purpose of tacf ministry seems to be to refresh and equip people and send them out into the harvest.