Due to time, I'll have to look at the Sports one a little later.
Finally got gold on it! The Sports level is definitely your best level to date IMO, and amongst one of the best ones for Lemmings 2 custom levels.
For once, the solution I come up with is something I'm reasonably sure is not a backroute. That's not to say the level might not have other solutions (including possibly solutions that save all lemmings, though I have little to go on at the moment), but this time around I think the backroutes, if any, would likely be harder than the intended solution (ie. pixel precision, or odd tricks like wall crawling). Also, the level solution feels like it's something one would expect in the real Lemmings 2 game (other than maybe the fact that any level in the official Lemmings 2 game would likely have been made easier, which of course I don't care for).
This also brings up a point about gold: since the game doesn't show you the max number of lemmings you can lose, perhaps it's best to mention that number whenever we post custom Lemmings 2 levels here, to save people time from having to run some other program like PCL2STAT to find out that number.
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It's strange how activity on this thread seems to have evaporated compared with last week. Is it just that it takes time to create levels, or have people moved on to other things already?
I suppose there's also L++, which I should give a try sometime soon, especially given the current lull in other topics.