First-time poster here, but I've been a huge Lemmings fan since I was young. I have been going to the forums and playing others' levels on Lemmix and Lemmini, and I have to say, Lemmings Plus is one of my favorite sets I have ever played.
When I played it, I felt like I was playing a new Lemmings game. There are so many levels that are excellent and show original solutions. Also, honestly, I'm not as good at solving hard Lemmings levels, so I feel that that this pack has been helping me to develop my thinking skills. I have to list a few favorites from each one, some with explanations. The bolded ones are my top favorites:
Note - I haven't solved all the PSYCHO levels yet, so this isn't a complete list for that difficulty. Also, I know the solution for PSYCHO 11, but it is really hard to execute.
Mild 8 - Wish you had them? - a very good tutorial level that differs from many others because you have to use other skills.
Mild 19 - Go on Up (forgot the title)
Mild 27 - Quarantine!
Mild 30 - You Just Lost the Game!
Wimpy 10 - Labyrinth of Despair - I love the labyrinthine maze and the fact that you can find multiple solutions due to the 30 skills of each (except floaters).
Wimpy 12 - Russian Rescue
Wimpy 15 - Just When You Think You Know! - you make a simple-looking level very tricky with a 99 release rate. I had fun trying to solve this level with 100%.
Wimpy 17 - No Need to Worry! - I'd daresay one of the more original one-lemming-leading-the-way level layouts - a floating box with one-way arrows really makes you think.
Wimpy 21 - One Step at a Time
Wimpy 22 - Fast Enough? - the repeat is original in that it makes you use a skill that people don't normally use under a tight limit.
Wimpy 26 - Savior
Medi 6 - Fallen - this level was one of the levels that helped develop my thinking skills
Medi 8 - Cavern of Chills
Medi 10 - Bob's Problem - for making me employ a multitude of tricks. But who's Bob?
Medi 12 - Step Up! - another level that helped develop my thinking skills.
Medi 16 - The Oddstack (though I agree that it should have been in late Danger. )
Medi 19 - Force Field
Medi 28 - Way Up High
Danger 5 - Some Kind of Lemming
Danger 6 - Alternative Logic - for having a small trick that you need with a split second to spare.
Danger 10 - Keeping on Track - it was fun finding a way to trap the lemmings with only builders.
Danger 11 - The Warp Room (I would like to observe that this one and Medi 19 both come from your very first LemEdit pack (as Steaver370)!)
Danger 15 - Circular Wavelength
Danger 16 - Grounded!
Danger 19 - Antigravity - I like the challenge of not having builders and needing to turn the lemmings on the right while saving 100% at the same time.
Danger 20 - No Salvation IV - I was able to employ a trick, since the solution is far different from the previous No Salvation levels.
Danger 21 - It's the Latest Craze! - one of my top favorite levels. I love the huge level structure, and the time limit works too.
PSYCHO 4 - Think Outside the Square! - I like how condensed it is in terms of time limit and skills compared to Medi 11
PSYCHO 15 - Where Anything Goes... - for learning another trick to save all the lemmings in an actually limited time. I don't mind the bashing of the long walls.
Wimpy 13, "A Magician Would be Handy," felt out-of-place. I know you stated that you like to put a hard level amongst levels related to their difficulty, but it feels a lot like a Medi level.
I'm not sure if this is true, but with the new bomber mechanic, I find that PSYCHO 10, "What Did You Expect?", becomes a lot easier. I haven't seen your replay to that level yet, though.
I liked the original Medi 8 as well - "Take Us All Home..." . It wasn't that bad for a building level, and there was a slight puzzle to it in that you only get 7 of each skill and you have to save all the lemmings.
As for the new Medi 3 and Danger 2 - "Just a little twist" and "Rolling Rampage," I feel that you should place those levels in your new Lemmings Plus game. Sure, the original Medi 3 and Danger 2 aren't anything special, but I feel that you've changed the pack too much. Those two levels would work better in the new pack.
Another thing I enjoy about the pack is trying to save 100% in levels where I can do so. It provides an excellent challenge for me, especially in Mild 19, Wimpy 15 and Medi 11. I think that the title of Mild 18, "Dying Not Recommended," gets that point across.
I may add more comments to your Lemmings pack, but I give it a overall score of 9/10. I think you did an excellent job.
I look forward to your new Lemmings Plus pack, and I'm impressed at your custom graphic sets. Good luck with it!