Besides giving lower rated players a chance to win a trophy there seems to be little of worth for the rest.

Though how to play when a piece down could be useful.

Tata Steel 2018  Round 8

Magnus Carlsen  v  Gawain Jones

1.e4 c5  2.Nf3 d6  3.d4 cxd4  4.Nxd4 Nf6  5.Nc3 g6  the Dragon 6.Be3 Bg7  7.f3 Nc6  8.Qd2 0-0  9.0-0-0 [also played are 9.Bc4 and 9.g4 ]   9. …. d5  10.Qe1 e5  11.Nxc6 bxc6 12.exd5 Nxd5  13.Bc4 Be6  14.Kb1 Re8  15.Ne4 f5 16.Ng5 Bc8 17.g4? f4  18.h4 fxe3  19.Qxe3 h6  20.Qc5 Bb7  21.Ne4 Re6  22.h5 Qb6  23.g5! hxg5 [ if 23…..Qxc5 24.Nxc5 Re7 25.Nxb7 Rxb7 26.Rxb5 cxd5 27.Bxd5+Kh7 28.Bxb7 Rb8 29.Be4 ] 24.Qa3 Rb8 25.b3 Qd8  26.Qxa7 gxh5  27.Rxh5 Rg6  28.Rxg5!Rxg5  29. Nxg5 Qc8  30 Rg1 Ra8 31.Qb6 Ra6  32.Qc5 Qd7  33.Ne4 Kh8[avoid Nf6+] 34.Qf2 Qe7 35.Bxa6 Bxa6  36.Qh2+ Kg8 37.Qh6 Qa7 38.Qe6+ Kf8 39.Rg5 Ne3 40.Qd6+ Kf7 41.Nc5 Bc8 42. Rxg7+! here  Black resigned  if …. Kxg7 43.Qxe5+ Kf7 44.Qxe3 guards the knight and the extra pawns will win.