How about "**hive for talent**?"

> [**hive**](http://www.merriam-webster.com/dictionary/hive): a place filled with busy activity

Also, consider "**hub for talent**" and "**mecca for talent**."

> [**hub**](http://www.thefreedictionary.com/Hub): a center of activity or interest, a focal point

> [**mecca**](http://www.merriam-webster.com/dictionary/mecca): a place regarded as a center for a specified group, activity, or interest.