Maybe some bug variety - Smaller ones that are faster, but are eaten in one hit - Bigger ones that are slower and take 3 hits? Change the spawn point around? Give the player an active ability that allows tighter turns/more speed?
This comes to mind, What are your thoughts about it?
Great work on the dash. It feels good and can be used as a attacking tool/closing distance tool or could be used to avoid getting smashed to a pulp by the fist.