The WTS makes much of Matt.24:14 "This good news of the kingdom...", and binds it to their end-times prophesying. The counter to that slant is found in the parallel verses in Luke 21:8 where there's a warning not to follow after people who say such things or to be terrified, but to discern a sense of urgency for yourself in eagerness for the Christ..
The "Gospel" or "Good News" is actually about Christ/ Messiah. That he has arrived, done his work, and people can receive the blessings that come from that. Some expand that to include a future "return", and if that helps them then so be it. Personally I see it in terms of a desire to enjoy more of his presense, rather than a sense of a current absence.
Anything to do with signs and seasons, confusion and anti-christ is just so much window dressing, to my way of thinking. When the emphasis is distracted away from the person of Christ himself then it has become something other than Christianity.