I didn't edit my post, I'm really playing FM2020, I just posted in here to increase the chance of you seeing my suggestion.
And I really wasn't asking to do it for FM2020, I know no one else is playing it anymore, I just thought it would be a great addition for the current and future versions. I think even people who don't cheat would like this feature. Don't worry about adding it, anything not enjoyable shouldn't be done. This is all for fun after all, no?
Btw, if you want to play FM a bit like a grindy RPG to make it more interesting, here's an idea. It's my own approach, a cheaty version of the Dafuge challenge.
You start the game with all english leagues active, you create a fake manager, start unemployed, go on holiday until june 24 of next year (so let 1 season play out). On June 24, a handful of non-league teams that weren't even playable in the 1st year, get promoted to the bottom of the english pyramid (you can see this in England > Overview > Season Summary on June 24). It might be a few days later in a newer FM.
So these new teams are worse than the worst teams you could play at the start of the game. You retire your fake manager, add your new real manager, and take charge of one of these super awful teams. Then your job is to grind your way to the top of football. This is the Dafuge challenge.
Without cheating, it's nearly impossible. With excessive cheating, it's fun, but lacks excitement. What I do is partial cheating.
Generally what I do is edit the stats of 2-3 players to make them great (enough to win most games and secure a playoff spot and have to improve the rest of the team normally, not dominate the league with zero effort). There's still gotchas even in this cheaty mode. Some examples:
1) player value is weird. So you edited your striker, he's scoring goals, after a couple of months bigger clubs come knocking. You gave him the stats of a 300k player, but his value in FM seems to be fixed at the time you signed the contract, so clubs will bid something like 10k. Due to the club being broke, your chairman will automatically accept the 10k bid, you can't even negociate a sell-on fee. Then 1 year later you see he's worth 30m.
2) costs go up faster than income. Even going up 1 division is a bad thing for teams like this. The increase in sponsorship money and ticket sales is negligeable, but you are forced to rent a stadium because yours is not adequate even by lower leagues standard. Also wages go up. So your friendly small town club owner is always forced to sell the club due to constant loss of money. I try to avoid this for romantic roleplay reasons, so I take things slower.
3) owner/board are unrealistically disloyal. You brought up the team from the bottom to League 2 then had a bad season? Your contract doesn't get renewed. Or perhaps this is realistic. Certainly, it isn't romantic. So I gotta game the board expectations as explained below.
4) buggy "team strength" when it comes to board expections. If you have strong players on loan, or strong players who will retire at the end of the year, the board doesn't take their departure into account when setting expectations for next year after the last match of the season. They base them on your current team. So their expectations might be "finish midtable" instead of "fight against relegation".
What I end up doing is use 2-3 retirees as my edited "super players", and terminate their contract the day before the last match of the season. No one unhappy, and I don't break the balance of the game by having edited super players moving around.
It's like some custom bastardized version of FM but I have fun. Give it a shot next year