Common issues with DC based skill systems

[Satinavian]

Opposed rolls, and it works quite well.

Only for conflicts. And easily only for conflicts between actors who have stats ready. By far the most rolls i see in a typical RPG session don't have any opposing opponents.

Depends on what secret agent is / what you want to do. If you're only interested in hacking, then just taking some ranks in Technology would be sufficient; if you want to be able to hack anything instantly, Machine Control would be more appropriate. If Secret Agent is a class and is supposed to make you like James Bond, then this could be achieved with some ranks in Tech, Vehicles, Covert, Charm, Streetwise, possibly Command, and the rest would just be mundane gear; you likely wouldn't even need any powers.

That argument was clearly meant for RPGs that have customizable/open ended skill lists. Something like "career : secret agent" as a skill, not a class. Icefractal seems to prefer systems where he can just put some ranks in discrete, well defined skills like Tech, Vehicles, Covert,Charm, Streetwise and command as opposed to systems where everyone has a couple of unique skills on his sheet that are nowhere explained in detail and where people don't really agree what exactly they cover and what not.