Hello Jason,
Design is always about trade-offs. The ADIS1622x products were designed for vibration applications that do not require continuous data. Machine health and many process variable conditions just don't change that fast, so continuous data is not necessary and even becomes a burden for those types of applications. Doing your own 3-D package and sensor signal processing designs are not trivial tasks. In addition, data storage and organization presents added complexity that have cost and convenience implications. I hope your project goes well. Good luck!
Best regards,
NevadaMark