There is a lot of talk about Pullen and other "terrible" guards, but you've got to have some trust in Frank's pattern here. I think its highly likely at least one of the options we have shows tremendous development from his FR to SO years, most likely Russell or McGruder. I think Irving "is what he is" and will take on more of a Clent Stewart role, granted he's a different body-type/player. But its good he'll take that role as a reserve and not the feature PG like Stew had to over his career.
No, I don't have to trust Frank's pattern. All I know is he ran off a player that was good enough to get 20 minutes/game and 8 points a game for Irving and Russell, who couldn't come close to matching that production in the same backcourt.
to be fair, while brown was a statistically superior player, and also appeared to be a better player to any observer of kstate games... the team was a lot better without him.
neither i, nor you, have any way of knowing if replacing brown had a positive or negative impact on the team last year. but it's a good bit harder to second guess the decision, when the coach that made that decision, ended up with a team that was substantially better than any(rational)one expected.