Most people know by now that nether portals don't work in skyblock. I know a few people including myself and friends that have went through all the trouble of finding and paying for obsidian and flint only to find out the portal doesn't work. I was also told that some of the hard challenges require things from the nether. I would like to assume it's being worked on.
I agree we need the nether portals to work. While your at it we also need to be able to check /island level. Not sure if command is in-active or whatever but there are about 3 or so challenges that require island level.
The Nether portals are disabled because, well, it's Skyblock. You could get tons of resources for free by just mining, unlimited netherack, lava, glowstone, netherbrick, soulsand ect...
That is a really good point, but there are a few challenges that require resources from the nether so I dont understand. Yea it would be nice to go to the nether but i guess it would kind of ruin things because there would be so many materials going around.