And, at 5 karma per power point (they start with 0), they have to expend a fair bit of karma to get those adept abilities.
I have a MA, PA, a mage, a sammy, and a decker in the game I GM and they are sitting around 220 karma earned (more or less).
At this level of play, all I can really say about the MA is he is extremely flexible. But that has generally been because he has been 'behind the curve' almost the entire time.
In getting everything he wanted (which I advised against... but, his character), it caused him to be not only short on in dice pools, but also in skills. His equipment just wasn't up to par, and his flaws hampered him big time.
Now, his dice pools were low, but not dangerously (for my style of play) at 8 to 10 on average, it meant he always 'just' got by, or took a little more drain, or did just a little less damage then the pure mage or physical adept.
And while the pure mage and PA where trading in money for karma, the was hording money to buy a focus. When they where spending karma on initiation, he was bonding foci..... he just continues to be that step behind the others.
Which in turn has affected his character build and decisions. I KNOW that when he created his character he, had a vision of some indomiable force on the battlefield, punching heads clean off with one hand, while frying groups of enemies with fireballs from his other... (cause after 5 years of playing with him, that's ALL he plays

)...
But the reality is, he can't out punch the physical adept, and he can't out cast the pure mage. But what he can to very well is suppress and support enemy forces, if not out kill them. So now instead of fireballs (which he used to use all the time), its Chaos world and Orgy. Instead of trying to go toe to toe with the front line fighters, he leaves that to the PA and sammy while he goes decker/rigger hunting.... In short, he's the 'back up guy'. He's never the primary lead in any tactical plans, but every single contingency plan seems to revolve around him...