SUGGESTIONS:
*NOTE* I'm on Xbox so its preview game. So some of these may be on the full release?
1) ability to show friends distance from you just like the GPS markers
2) dandelion flooring
3) colored carpet (different colored flower petal and gnat fuzz for example)
4) acorn fence gate
5) half walls
6) dandelion stairs
7) colored stair runners (same idea as carpet)
hammock (portable but breaks after so many uses) need two grass to connect it to or build hammock posts?
9) ability to dual wield daggers (maybe a new armor perk)
10) tubular building structures (hamster maze)
11) Rock climbing spikes make it so you have to jump from spike to spike?
11) new resource gold, flakes of gold used for crafting new tools for faster collection but quicker break? Can be farmed from a bracelet or novelty gold flake jar thrown in the yard
12) ability to change difficulty on multi-player server (i would be okay with only being able to increase but not decrease!) For me when I click on the difficulty of the server it shows the options but won't let me change it from medium.
13) new outfits, obviously there's been other people shrunk or else there wouldn't be so many tiny skeletons and sca.bs laying around they wore clothes too
14) dragonflies, ability to craft saddles to let us fly! (Day dreaming on that one)
15) abilty to build inside caves and stuff