So we need to have more options with the stuff we have already. I was thinking a 1×1 and 2×1 of clay for sure needs to be added and a corner connection for ramps.  For grass Inverted triangle walls would be great too.  Also need to have half walls and floors.  As for the weeds not to much I  have run into yet. Maybe windows that you can close to keep out the flying threats from getting in in grass and weed form.  Maybe add a weed floor type as well for us that want to make just a wooden structure. 

definitely need inverted triangle walls