The old terrain didn't fit with the style of Blockland at all.
Who cares? Removing terrains jeopardized the fun of Blockland, and it was a risk in my opinion to remove them. Now that they are gone, and people actual realize that they don't contribute to the gameplay at all, except making it "pretty looking" I really hope that people will find out that all of the good servers that made Blockland enjoyable are now gone. All the good servers such as Nobot's Death Race, or Wizzard's Dog Fight are gone because they were made on terrains. It really doesn't matter that they didn't fit with Blockland's style considering the fact that they were what made Blockland unique and fun.
The strongest arguments against terrains are that they didn't look good, without them it forces people to actual build creatively and make something, they didn't work well, and now Blockland video makers can make pretty looking videos! I have arguments for all of those statements.
1. Terrains didn't look good, I admit that. The textures weren't HD and they were quite repetitive. Who cares though? Blockland was meant to be a gameplay over graphics game and that's what made it unique. I respect them for trying to keep to par with today's modern graphics, but when you remove an essential element in the game to add something just to enhance the graphically capabilities it doesn't make sense. Terrains may not have looked good, but they are what made Blockland so much fun.
2. Some people can't build as well as others. Terrains were a way that people could still use their ideas or concepts for a server and make it with ease. Not everyone can build a huge castle for a TDM, or an island for an RPG. Terrains were used as a tool to make great servers when people couldn't build that well. Lots of the servers nowadays don't display good builds and it seems like most of the good builds were made with terrain. However, that's just my opinion.
3. People say they didn't work well. I don't entirely understand what they mean when they say that but in my mind they worked very well because they made up some of the best servers in Blockland.
4. If you are actual good at making videos, then you don't need pretty looking shaders to add "flavor" to them.