Out of interest, what type of club would you like to see him at? Say for example the Palace job came up, is a top half finish in the Prem with Palace worth more than winning the league with Rangers? Not forgetting the European runs he's had with Rangers as well.
No other job will prepare him better for Liverpool, than the one he's currently in. You can knock the quality of the league in Scotland, but the sheer pressure of needing to win every week, the pressure of stopping Celtic doing 10 in a row this season, a lesser man would’ve walked away having had a couple of attempts at stopping them but Gerrard is a winner, he thrives off that pressure. Going from that to a possible relegation battle, or middle of the road Premier League team does nothing for him or his reputation as a manager.