Packets sent for WoL are small and don't require much bandwidth. If you want to maintain Powerline for this purpose and simultaneously be able to use WiFi, take a look at this article.
Yeah yeah. Open back is good but these are really good for being closed back. The soundstage is still there. But not as much as the DT 990s.
Also I recommended the 80ohm version because those don't really require an amp. An amp basically amplifies the signal which makes the audio come out louder.
The DT 990 pro are only available in 250ohm. Which I think require an amp.
But why I recommended the 770's is because they got a fun sound especially for like EDM and pop and hiphop music. They work really good for gaming since the imaging is also pretty good.
TL;DR
DT 770 80ohm are more immersive and fun sounding for gaming and movies than most flat headphones at the same price.
Edit: When I mean fun sounding I meant that the bass is a bit boosted and the treble.
