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there's the spiritual successor, Forever Stranded (https://www.curseforge.com/minecraft/modpacks/forever-stranded).
Although, Iskandar said he considers the modpack Atonement: Sins of the past to be Crash Landing 2. If you haven't checked it out you should, it's really good.
To be honest thought, I haven't heard anything from Iskandar on the forums for about 2 years.