Skill Trees and Dungeon Crawling

I've been thinking about some new features to add to the game, and I am starting to work on the combat system a little more and integrating a Skill Tree. So far I have not used any plugins to make the game work, but a few features like full screen play and animated side view enemies would be nice for the game. 

The skill tree seems to make the combat more interesting and gives incentive to the player to actually do side quests. That being said, I have to make a few more side quests to the game. I still want to push myself to do as much as I can with the stock RPG maker software, and I don't believe that Beautiful Kingdom will use plugins.

I am starting to add a few dungeon crawling mechanics to the game. I feel that this is where the game play is shining and it needs to be explored a little more to add the play ability to the game.