S4 Ep2 looks pretty cool. It's a shame that it will be short like the first one. I didn't really bother with Episode 1 because they were splitting the game up, and I figured they'd release a compilation somewhere along the lines. Then I noticed that all of the levels were just rehashes of older Zones, and that was truly disappointing.
Episode 2 looks to have gone 50/50, by giving us a reworked Aquatic Ruin and Ice Cap, along with what seems like new areas. However, it does seem like there are still similarities with previous Zones. There's that oil derrick level that will probably have an oil spill at some point, and the rollercoaster level which seems to blend Carnival Night and Stardust Speedway.
If they're going to keep remaking older style levels, then here's hoping that they remake Scrap Brain, Hydrocity, Flying Battery, or Death Egg (S&K).