Bryce Hoppel vs Jake Wightman in the 1k, Clayton Murphy vs Nick Willis in the mile, and Donavan Brazier in the 600m are some of the big races. Konstanze Klosterhalfen and Jessica Hull are in the 1500 and Emma Coburn goes against Elle Purrier in the 3k. Plus the return of Trayvon Bromell in the 60, which also features Asafa Powell.
I'll also be interested to hear from Edward Cheserek, who is in the 3k and recently decided that he will try to run World Indoors and the Olympics for Kenya this year.
LRC preview is here: https://www.letsrun.com/news/2020/01/what-to-watch-for-this-weekend-tuohy-vs-cain-debuts-for-brazier-mclaughlin-trayvon-bromell-is-back/
Results page/schedule is here: https://www.letsrun.com/news/2020/01/2020-new-balance-indoor-grand-prix-results/