Personally, I don't like special characters and I like "small-ball" play style but I find that about 50% of tourneys allow special or named characters.
Teclis is powerful and often cited as the reason SCs aren't allowed, but there isn't an apples-to-apples SCs. For a long time, Archaon and Teclis armies marched their way to the top placements at most tournaments while Ska the Falconer looked on in envy.