The Portland Trail Blazers are getting the tires going in their offseason push after losing to the San Antonio Spurs in five games in the first round of the NBA Playoffs. The Blazers face a tough offseason ahead as they look to move forward into the hierarchy of the Western Conference without a ton of wiggle room, which makes this an intriguing offseason for Portland. Here's a look at the three biggest questions facing the Blazers this offseason: Will Tiago Splitter Stay as Head Coach? Portland Trail Blazers head coach Tiago Splitter during the second half of game two. | Scott Wachter-Imagn Images The speculation surrounding Splitter's future is about the philosophical alignment between the coaching staff and a front office that may be pivoting toward a long-term rebuild. While Splitter has been praised for his player development, particularly with the younger rotation, the system he implemented requires a level of veteran discipline the current roster often lacks.…