Coming out it from a football perspective the key things to try and get right I think will be tv contracts (huge difference) and ticket prices.
As an example from the English Leagues..
Premier League tickets prices are about £50
League 2 are generally £20
rest will fall in between.
Tv Contracts
The latest 3 year Premier League TV deal was for 5.4bn pounds, a staggering amount.
Rough figures from that..... Each team got around 50m from domestic and overseas tv income. They then got money per their finishing position (see below) and then they got around 9m for having 10 or less games shown live and an extra 750k for each game above shown above 10. Aston Villa who finished bottom last season earned £66m for doing so altogether! Then they got another £1m plus payment per position (from bottom to top)
http://www.totalsportek.com/football...ey-table-2015/
Not sure of excat details but I think Championship teams get around 2m from the Football League Tv deal and then lower for League 1 and lower again for Lge 2.
So I think they key is to make the media money vastly different for your top league. An option to have some kind of ticket price cap per league would be useful as well.
It would also be useful for another test sim to remove the draft and have FA instead to see if the top level teams snap up the best FA with their extra money.
The only other thing we then have to replicate is to get just about every team into massive financial debt
