What makes you think Leigh have no chance of getting promotion to SL?
It seems to me that there are two possible ways for Leigh to get into Superleague. The first is to decide that's where they are heading and work consistently and damned hard to build a club that can meet the entry criteria and use the three years to continue building until they stabilise.
The second is to campaign to have open promotion restored into SL, get lucky enough to go up and then hope to God that they can scrape enough wins together to stay up, and build the club's finances on an overly optimistic forecast of a boom in attendances that in reality will never be big enough.
I believe Leigh have already tried the second route. It didn't go well.
The first route isn't going too great either.