In what way is a technomancer with 14-30 dice in defense "squishy"?
If you have 2-3 willpower, yes, you're squishy. You don't have much over base stun track, you have mostly nothing in any matrix defense test you can go up against or matrix/fade damage resistance. If you end up having to jack out or are dumped in any other way, you're going to be out of it for seven or eight minutes. Thats a pretty long time to be out of it. You might get addicted to hotsim VR, or if following some of my other strategies (Namely, taking drugs) addicted to all kinds of drugs. You also have a slower time healing. Even in just the meat world, more Will power is better, due to your ability to use full defense. If that is your only action, so be it. You'll live longer, possibly long enough to escape.
Some of the cooler things with a Technomancer with high will power.. Blowing the snout out of Spirits. NEIJIA is an anti-spirit martial art attack, that could very easily allow a technomancer to kill spirits, even with his piss poor physical stats.