Depending upon how much time you get, you should try to play your favorite PC archetype, but also something you don't usually play.
If the game won't let you play your faves, that may point out a weak spot in the system.
When you try to design what is, for you, an unfamiliar PC type, you're coming at the problem more like a noob, experiencing the confusion & information density of the unfamilar.
As I pointed out, ideally, you'd do that if you have other players in the group trying out the game's sweet spot. The sweet spot MUST be tested, since that is where 85%+ of the gamers lurk.
But remember, playtesting is a time-sensitive thing- if the fringes of the game don't get tested, you might find some real dragons lurking out there.
If the game won't let you play your faves, that may point out a weak spot in the system.
When you try to design what is, for you, an unfamiliar PC type, you're coming at the problem more like a noob, experiencing the confusion & information density of the unfamilar.
Starting at the extremes, without some experience in the sweet spot to see how things should work first, seems like it would not be as useful.
As I pointed out, ideally, you'd do that if you have other players in the group trying out the game's sweet spot. The sweet spot MUST be tested, since that is where 85%+ of the gamers lurk.
But remember, playtesting is a time-sensitive thing- if the fringes of the game don't get tested, you might find some real dragons lurking out there.