I've just started playing the game for a day or so and find the game needs a few touches to make it more user friendly and more engaging for casual gamers.
Things such as
In the inventory menu there could be popup text to tell you what the selected block/item/ore is, atm i have to constantly quit the game and goto the user manual online to find out what it is.
Also popup text to say what was added to the base machine/furnace etc, at the start of the game we don't have the capability to make sequencers and conveyor belts yet, so we have to go by memory on what was added.
A map would be handy also, i have found my self getting lost quite a few times, especially when going from blue, white (the area with the water) then to the green areas ( lava pits bordering the insane black area).
an in-game manual, trying to memorise ore sequences for the furnace can be quite difficult at times and having to quit the game then go online to view the manual is pretty annoying at times.
A storage box, where users can store items that will still be there if they die, also a way to retrieve items lost on death, it's quite disheartening to build up alot of ores and tools only to loose them all if you fall down a hole or get killed by those smiley faces.
just a few thoughts.