Could you extend your mod to be compatible with Blockus?

I assume you mean adding additional shape variants for Blockus blocks. Is that right? I would like to see that, too.

Yes, that is correct.

Unfortunately I won't be able to provide built-in Blockus support at this time. Blockus is GPL and while I might be able to implement blocks using Blockus textures as a sort of companion mod, I prefer to avoid the risk of license entanglements and having a separate mod to maintain.

That said, it should be relatively easy for Blockus to create this integration, or for someone else to create a GPL companion mod that does so. If anyone is interested in pursuing that, I would support with necessary hooks or answering questions as needed.