W2 editor does not have more options then WA. You can download seperate scheme editors then the default one which is built in and these got alot more options.
There is alot more features in WA then W2 as well like colored maps, big maps, test stuff etc etc.
If enough people has W2 and people would like to play tourneys in there I don't think it would be a problem. The problem I saw while visiting W2 last time was that almost no one was able to host. Even though they forwarded ports and disabled firewalls. Some could some couldn't and it was a really big mess because it was rare if someone was able to host.
But if enough people shows interest in having a tourney there and is 100% sure that they can host and join games then I guess it's worth giving it a try.