Stacking Block Toy Train Tracks

This is a work in progress, I hope to have more pieces are coming soon. I am posting this partially complete project now to get feedback from others printing/remixing the Block Train.

These are interlocking train tracks sized to be compatible with the block train. They are all reversible (not really a thing for straight pieces but important for curved pieces, which I will be trying next).

I made 60, 120, and 180mm lengths of straight track as well as a 45 degree turn (I previously had a 90 degree turn but that would cause the train to derail).

I would love any feedback on these, including ideas for more pieces. I will probably work on T junctions and maybe inclines/bridges.