No one knows for sure if the government will require any asset divestitures. Let's wait and see.
ORD is it not slot constrained? I know IAH is not. IAH will be the company's main Latin America gateway with targeted service to Latin America from various other hubs.
For now CLE remains, but we are under no illusion that it could be the first hub on the chopping block. If anything for now, CLE could be a reliever hub for ORD.
DEN has F9 and WN keeping capacity high and fares lower. Therfore, the combined company is going to want to improve yield out of there eventually. If not, then ???
EWR and IAD will coexist as they are today. From what I have heard neither is cannibalizing the other. EWR is blessed with more O&D traffic and is the number one business market. EWR is here to stay.
As for seniority integration, rightfully so, the CO folks are a bit flipped out at the moment. UAL employees are generally more senior over all. The overwhelming majority of CO employees were hired in the last 15 years. So we will see what integration will bring. Houston employees are sad and angered because the combined company will no longer be headquartered in Houston. Oh well. The sun will rise tomorrow.