Many sensors provide usable readings only if they receive a stable input voltage, but the tiny architecture does not provide a 3.3 volt line, and has regulators distributed to the various shields. Since you guys at Tiny-circuits have already done all the leg work to source these boost&buck regulators which handle swings all the way from vbat to the 5v from the FTDI, why not produce a protoboard that already has these little guys on it to provide a stable 3.3v line? That would save us from having to cobble together stable voltage solutions from other parts, just to get our temp/pressure/etc sensors running consistently.