Okay let me make a few things clear.
Now I should really get on with that next update shouldn't I? :P
- Absolutely NO REPLICAS OF EXISTING SHIPS OR SPACEBORNE LIFEFORMS. This is a chart for StarMade ships, not a generic sci-fi chart.
- There is no upper size limit. Like Lecic correctly stated the canvas can be extended indefinitely.
- There is a lower size limit of 90 metres (either length or height in the case of vertical ships).
- No 'doombricks' or hastily slapped together system bricks of any kind.
Now I should really get on with that next update shouldn't I? :P