you should make more likely to spawn lake tiles next to existing lake tiles to create larger bodies of water, also a way to fill in lakes to get rid of unwanted tiles
also multitasking, you shouldn't have to wait out the mining progress you should be able to just make it mine and move onto other tiles
You should make it generate more than one row of woodlands and make the further ones fade in to black and then replace the blue background with black to create a sort of fog of war effect. And maybe generate other than just forest.
1. I was afraid of using this at the risk of lakes that are bigger than they should be. But meh, I suppose that just happens when using formulas like that.
2. I want to make it so you have to keep clicking to make progress on a tile instead of just clicking it once and waiting for it to do it's business. Perhaps this could apply to only specific tiles?
3. I could just make the background of the game black and draw a full field of forest tiles, and then use a darkness variable that's added to based on the distance it has in between an already explored tile and itself, and if the darkness variable makes the tile fully black, I'll just not draw it to reduce lag.
The same should go for anything drawn on screen though.