Training Camp

I would love to have some kind of training camp with two features:

1) attack training
basically the same as the single player goblin missions, only that:
a) you do not need to train troops nor pay them. Just set up which troops you want to have when attacking. No time to "produce" the troops.
b) there will be no loot. Just training.

2) defense training
have a random group of cpu controlled troops attack your base or set up which troops at which level should attack. Loot won't really be stolen. Test your defense after setting up a new layout.