Trammell is a borderline case; I'm as inclined to keep him out. He was basically a glove guy who managed to hit. I don't even recall the Tigers ever really basing their team around him - it was the tandem of Trammell and Sweet Lou Whitaker. Together, they were phenomenal, and much more than the sum of their parts. Trammell himself, well...his career averages out to 167 hits a full year, with 13 HR, 71 RBI, and 17 steals. He earned 4 Gold Gloves (early on) and 3 Silver Sluggers (later on) at shortstop - in other words, whenever Cal had an off-year. His defense was helped by having Whitaker next to him (though to his credit, there was a parade of palookas at third he had to cover for).
And all the "positional talent" or whatever the phraseology is a bit overblown. Yeah, there were more Mendozas at short in those days, but the position was in the midst of being redefined. There were other shortstops with some pop in their bat who were playing earlier - Roy Smalley comes to mind. Besides, if you do play the positional argument, you have to pick up the non-statistical slack by performing at that position. Trammell's defense was remarkably solid, and he earned the Gold Gloves. Cal Ripken may have been able to get into the HoF on his glove alone, and Ozzie Smith changed the game he was in so much by being at SS that it completely overshadowed his bat. Trammell, with one or two notable years as exceptions, wasn't the most valuable, game-changing player on his own team.