I have been thinking about this for a very very long time, denied it twice, but...well Its the truth.
This old engine, heavily modified, but still, I can no longer deny the fact that, our engine is an old bloated thing that we need to get away from.
We would be better off trying to re-make Blockland in another engine, even if it mean loosing a large amount of stuff, I'm sure its possible to do it, you would just need to have a lot of time and dedication.
What engine? Hell I don't know, it should be suited to meet our need if anything, the Number 1 thing on the list would be an engine that can handle a very large number of Bricks, and be capable of robust modifications.