Well I'm working on a TL that begins in 1600BCE onward. The key feature of this is that the massive migrations that brought an end to the Bronze Age civilizations of the Near East doesn't happen. The reason it doesn't happen is that the climate continues to get warmer instead of getting colder around 1600BCE. Thus the steppes of Eurasia are less dry and able to handle higher populations along with more rain from the monsoon making Arabia and the Indus valley much wetter. The higher amount of water in the air makes more snow which feeds the rivers there. Well here's the first part of the TL, there isn't any PODs here just yet but the next two hundred years will see a totally different world.
POD: 1628 Another peaceful year on Thera a trade hub in the Aegean.
1600-1400 bce
1595 The Hittites sack Aleppo and Babylon reintroducing cuneiform to Anatolia
1590 Mursilis, the Hittite king, is assassinated starting a 60 year long civil war and a two century dark age for the Hittites
c1570 The Kassites come to power in Babylon; the Hurrians move into Upper Mesopotamia establishing two areas of power, the Mittani at Washshukanni and Kizzuwatna in Cilicia; Assyria is vassalized to the Mittani
c1550 Aryans move into northern India destroying several cities of the Indus still struggling to cope with the drying up of the Saraswati river; New Kingdom is established and the Hyksos thrown out of Avaris by Ahmose I and after a hundred years Upper, ruled by the Hyksos, and Lower Egypt, once ruled by a weak Thebean dynasty, are once again united;
1530 Telepinus comes to power in Hattusas, capital of the Hittites, reorganizing the government.
1504 Egypt under Tuthmosis I conquers Canaan, Sinai, Lower and Upper Nubia, and Kush.
c1500 Shang develop writing; Metal working begins in the Andes; Ironworking developed by the Hittites.
1480 The Hurrian kingdoms are united under King Parrattarna of the Mittani
c1475 King Ulamburiash of Babylon conquers Sumer; The Mittani and Egypt clash over Syria and form an alliance afterwords
c1450 Crete is conquered by the Achaeans (Mycenaeans) and Troy is sacked; The Mittani ally with Kizzuwatna and Ishuwa to keep the weak Hittites penned up in Anatolia; Assur revolts and is sacked, the palace doors are taken back to Washshukanni;
c1430 Tudhaliya I comes to power in Hattusas beginning the Hittite Empire
1400-1200 bce
c1400 The Hittite Empire allies with Kizzuwatna against the Mittani and Aleppo razing them and expands west into Arzawa. A weak phase follows the death of Tudhaliya and Hattusas is razed soon after.
1380 Suppiluliuma I comes to rule the Hittite Empire
1363 Ashur-uballit I comes to power in Assyria and revolts against the weakened Mittani.
1353 Akhenaten comes to power and changes Egypt's polytheistic religion to a monotheistic one with the sun god Aten starting a near civil war. Egypt loses control over the Levant.
c1350 The Anzanite dynasty comes to power in Elam,
1344 King Suppiluliumas comes to power in the Hittite Empire recapturing the capital.
c1340 Suppiluliumas invades the Mittani Kingdom during a succession crisis and sacks Washukanni, reconquers Arzawa, conquers the Mittani land west of the Euphrates and south to Arvad and Qatna
1335 Akhenaten dies and Egypt loses the Levant
1305 Sethos I comes to power in Egypt
1295 Muwatalli II comes to power in the Hittite Empire
1290 Ramesses II comes to power in Egypt
1285 Ramesses II defeated by Muwatalli II at Qadesh which he tried to conquer. Clashes over Syria will continue on and off for 27 years
1274 Assyria annexes the remaining Mittani land all the way to the Euphrates
1273 Shalmaneser I comes to power in Assyria
1258 Peace treaty between the Hittite Empire and Egypt returns to the status quo and has a mutual defense clause against a third party. This is to counter the rising power of Assyria.
1243 Tukulti-ninurta I comes to power in Assyria
1220 Babylon is captured by the Assyrians till 1213
1207 Tukulti-ninurta I's sons revolt against him and he's murdered. Ashur-nadin-apli I secedes him