Changing the path where the games are installed might not work for on line games that receive frequent updates and patches. I play a lot of games and have no problems using training mode when installing them and running them the first time, but I can definitely see how it would be a huge problem on a child's computer where he or she would not know how to change the settings back and forth. CIS is definitely not kid friendly.
The hardest games to set up are the multi server ones like Team Fortress 2 and others of that ilk. You definitely have to leave CIS in training mode until you have actually connected to one or more of the servers hosting instances of the game. I think training mode should have a timed popup like installation mode to remind people to switch back.
Nope it is not so much difficult. Nor it would be needed to use training mode everytime if firewall alert level is left to defaults whereas only two rules for a path based game policy would be needed to take care of zillion teamfortress servers.
Stealth wizard may also be used to create rules that are
unpractical for some games (P2P apps and others apps that act like servers) since in some case that a block all rule is added to Global firewall rules.
IIRC the only game that could cause some alerts would be
WOW. Though I might have read elsewhere that grannies loves it, I guess in that in similar cases the issue is that games do not act as such but like installers, whenever a
new single-use installer is generated/spawned outside the Game mode policy
path there will be alerts for sure.
In such cases it is likely that appropriate rules ought to be created by dads or grandsons or alerts should be answered without marking them to be remembered.
BTW it is not that such games actually
need to spawn such updaters while they are in full screen mode...
Nor it would be mandatory to spawn applications outside their folder either.
They were designed that way whenever they can
also considered games, indeed they are
unfriendly when it comes to HIPS based security (or even
LUA security).