To answer your question about heating in your lap, the rear exhaust prevents the bottom of the notebook from getting very hot like wise the intakes are also not on the bottom so you don't need to worry about blocking the venting system. That part should do well for watching tv while you play.
The VX are available now in the states, I have seen at least one model on Amazon. There are several models of the VW and VX pay attention to the spec's and get the one you want or can afford.
I can't speak to the G55 although it has the same cooling system more or less.
I'm quite happy with my G75, disappointed with the sound system. However it's all good with headset or external speakers.
Some people have had issues. If you buy one you should test it thoroughly everything as soon as you get it. Most vendors have a short return period should you get one with problems. Tech support is flaky, service center also flaky some people have good luck some really don't!!!, This forum has lots of really good help and most problems are solve rather quickly. Since we mostly see people here that do have problems. Of the thousand of these units sold only a small percentage ever come here for help.
G752VY-DH72 Win 10 Pro
512 GB M.2 Samsung 960 Pro
1 TB Samsung 850 pro 2.5 format
980m GTX 4 GB
32GB DDR 4 Standard RAM
Z97 PRO WiFi I7 4790K
Windows 10 Pro
Z97 -A
Windows 10 Pro