Every time I come back, shields seem to less and less effective. What the kitten CCP? For Caldari this is how we survive. It seems every kind of weapon tears down my shields nowadays. Is anybody else seeing this matter the same?

We just need a damag threshold to prevent little amounts of damage stopping regen.

I feel with you, since I have a, much lower SP, caldari toon aswell, and I hate how a scrambler anihilates most of my sp in a split second. However, the Caldari doctrine in EVE, that has been the base for the caldari suits, relies on long range weapons, with high damage.
But, in EVE, there are shield transporters, to compensate in fleet fights. So what we need, to make shield tanking much more viable, is a shield transporter (rep tool) to give the caldaris direct support. And maybe even a slight buff in shield base stats.

The changing of the scrambler profiles I suggested further up, will also help to make shields more viable, and normalize these values with their direct opponents stats for projectile weapons.