make bigger flat decorations to help with island layout.
there are 1x1 tiles, and for 2x2 i can use the pond. there are no 3x3, 4x4, 5x5, 6x6 decorations. they would be very useful for planning out the island space. i like to tile everything except the spaces where the habitats will go once i get them. its very cumbersome and unflexible using 1x1 tiles. such bigger objects would be very helpful. absent better ideas, you could just call them big tiles or large pond. or maybe e.g. "habitat foundation", which could allow placing a habitat right where they were?
no problem if they cost a million gold.