So - not sure if someone has asked/requested this. I'm almost sure it has - but would like to add to the requests.

Many hero portraits are completely lacking any background, while others with even a simple background (Tidewalker is a good example) feel more polished. For example - Pudge. Pudge has a great protrait - which is dimished by his greenish, static background. It doesn't even need to be all that complex. Just make that greenish background a bit more animated to simulate his rot ability. Anything that isn't just a single, flat color would be nice.