Looks good :)
I don't see any errors.
There are several reset sources. I think they're ok, but not sure.
The USB connector is marked 'miniUSB'. Not sure which connector you're
using. I recommend micro-B (i.e. H11610CT-ND), following the cell-phone
GPS power often has filter inductance added. This reduces interference
generally, but it also keeps local oscillator frequencies isolated. It
would be unlucky if the GPS and CC1111 internally used the same
frequencies or related harmonics. But i guess you've tested them
together, so you're ok.
As an added feature, your sense_m & sense_d lines could sense igniter
resistance by grounding these lines and measuring the time to re-charge
up to V_high-threshold. This would be more accurate if the sense_ lines
had filter capacitors.
If the pyrotechnic operation is safety-critical, the power switch must
be positioned so that unexpected pyro-operation will remain safe during
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