I agree that hyperspecialists, while dominating, can be boring to play (even if you can use your schtick in another area - a face using commanding voice for combat situations, for example). But be sure to let players know what kind of dice pools you like beforehand, though, because it is
easy to get high dice pools without gimping yourself in other areas, or sometimes without even
trying too hard.
Also, high dice pools are not necessarily out of line, considering that you are playing super-tough, sneaky, cunning, badasses who make their living doing extremely dangerous work, and constantly going up against hair-raising threats. You are not office schlubs, street punks roasting rats over garbage can fires, or neophyte would-be-heroes out killing kobolds (unless it's a variant campaign...).
While the system is an open build one, it
DOES discourage hard-maxing. If, for example, you want to be absolutely the best at pistols that an elven adept can be, you need to: pay for the elven race; get the adept, aptitude/pistols, and exceptional Attribute/Agility positive qualities; hard-max your Agility at 8; get muscle toner: 2 for it; get pistols (with a specialization in semi-automatics) at 7; get a reflex recorder for pistols; spend a Power Point for two points of improved ability in pistols, and get a pistol with a smartlink. Congratulations, you roll 24 dice for pistols! Now take the same guy, only you decide to forget about the two positive qualities, soft-max your Agility at a base of 6, and get the skill at 6 (everything else stays the same). Aw, now you're only rolling 21 dice for pistols! But you know, 21 dice is still pretty decent, better than most, in fact, and it cost you
73 less Build Points to get it. 73 Build Points. Out of 400. (Note that for simplicity's sake I've stuck with the basic book for this example).
Now, if you're decent at making characters, you could probably make the hyper-specialized version above, and not have any
glaring weaknesses or lacks. But usually, the guy throwing 24 dice is better for "how many dice can you get for this" threads, and the guy throwing 21 dice, with those 73 points spent on contacts, tertiary skills, and so on, will be more fun to actually play. YMMV.
Also, while high dice pools
might not be out of line, they
might be, too, so it's always good to check with your GM.