As David Watts said, making all LTM's 1.000 and not running autocalc would be using the League Totals without any modification. If you do that good luck with the output. Extreme results could come in either or all directions.
I think what you need to do is..
1. set your League Totals to whatever you want to get they type of stats you want for your league.
2.Run autocalc and get League Total Modifiers for the first season to set the baseline.
3. Make sure the box to run autocalc is not checked.
Your first season will come out close to the autocalced stats. Over the first season and then off-season players will develop, ie the "ratings pool" as a whole will change. In season 2, if you don't autocalc/change your LTM's your stats will start to drift as the "new" ratings will now be used to determine output.
Each following season will continue to drift as the underlying ratings continue to change while the LTM's stay the same. With this method you start with realistic output and stats can drift from that baseline.
If you start with all LTM"s at 1.000 you will probably end up with an unrealistic baseline for your league to drift from. There's no reason to start with LTM's at 1.000. The game isn't designed to work that way, ie 1.000 is not a true default meant to work with provided League Totals.
The discussions don't seem to come up here as they used to, but years ago there would be posts from users that DID NOT autocalc every season. Instead they would autocalc season 1, let the league go x number of seasons to get some drift, then make adjustments from there. Ie after three seasons of "stat drift" they might take the latest stat output, input that as the new League Total, autocalc to get a new baseline, then rinse and repeat.
End result is a league with realistic stat output that drifts with rating changes (I think that is what you want?). It also leaves you a way to adjust every "x years" if you think output is getting out of hand, and if you never autocalc it may eventually do that. If you get to the point you need to reign in, or bump up, the output you can autocalc back to the original baseline. Or you can input new League Totals (based on your "drifting output" or whatever trips your trigger) to set a new baseline.
I hope that all makes sense and is helpful.
