Ask HN: Any recommendations on dealing with a company restructuring?

The company I work for will soon go through a major restructuring. At the moment the company has a /very/ flat, start-up like structure (3 levels: 1 CEO -> 2 Managers -> ~100 employees). There are also roughly 10 team leads in charge of service lines/products, but that are not involved with the business side of things at all (e.g. budgeting, leave approval etc.). The reorg's purpose is to introduce more structure and delegate responsibility (I guess all startups go through this?). Effectively the plan is to elevate the 10 team leads to managers of the various service lines and products they lead now, including some of the business responsibility. I am one of the team leads, and also one of the most senior developers on staff. There is a big strategy session being planned to discuss and implement the reorg. The meeting will be politically laden (some guys manage 3 people, some as many as 20, with varying years of experience). So I have two questions: 1) In general, what is your advice for handling the restructuring? Any experience, advice or mistakes, pitfalls or caveats you can recall I should avoid/lookout for? Anything I should specifically ask for, or push for? 2) There is a lot of unrest amongst the team leads (hence, politics) with some being way more senior (~10 years exp) and managing larger teams who will now be promoted along with/treated the same as mid-level guys (~2-3 years exp). There is a big question of fairness, and the road ahead. Any strategies for dealing with this?