I think it’s a balancing act. For me, always having a challenge isn’t too fun, but neither is it always being super easy.Honestly half the fun is pulling someone to kill them and having a great fight as a result. Not everyone who ganks shares this opinion, but I have just as much fun with a "fair" fight as I do a one sided battle.
That’s certainly the sentiment I feel when an invasion CZ throws out nothing but Cyclops after Cyclops after Cyclops… and it is just not difficult to beat them. I mean, sure, you have to give some leeway for the casuals, but would it hurt to throw some Basilisks and Medusas in there more than once every eon?