I think a good idea for Minecraft would be to add in a redstone extender. What it would do is it would extend the duration of a pulse put into it. It could look much like a repeater and in some aspects it would be similar. For instance you could set how many ticks it should extend the redstone pulse for. It would automatically extend for a tick, so the pulse that goes into it goes through immediately, however after it stops it continues being output for however many ticks the extender is set to (one in this case). This would help with many redstone innovations and open up lots of opportunities for new inventions.
Exactly, It would help a lot with multiple piston controls