What I suggest is to firstly implement a better difficulty adjust algorithm to protect the chain from potential threat of malicious mining power.
If we can decide the proper algorithm, we can go toward the direction to implement it.
However, I don't like the idea to increase the block size as it's not the necessary thing for Terracoin. It don't need to be popular but it should be secured.
Totally agree, what algorithms change best candidates come to mind? we'll have to merge from existing coins I guess.
Also agree no need to increase block size if it comes to that we'll be in a much better place I guess.