Renderers Middle Ground?

tryme.js

// RenderDelegates are a part of jQuery so they are reusable.
var del = SC.RenderDelegate.extend({

  enable: function(flag) {
    this.setClass('enabled', YES);  // used buffered jQuery to build up changes
  },

  active: function(flag) {
   this.setClass('active', YES);
  }
});


MyApp.ButtonView = SC.CoreView.extend({

  renderDelegate: del,

  isEnabled: YES,

  isEnabledDidChange: function() {
    this.get('renderDelegate').enable(this.get('isEnabled')); // buffers...
  },

  // this would be our generic render code...
  render: function(ctx, firstTime) {
    if (firstTime) this.get('renderDelegate').render(ctx);
    else this.get('renderDelegate').update(ctx);
  }

});