I don't want to say "I would have paid more!" cause I don't want to give you any ideas but it seems to me that if the upgrade offers features that you find valuable than it is worth the price and probably more.
If the features aren't what you want or need than why did you even comment?
Just stick with version one!
Your implication is that if I purchase an Adobe Creative Suite upgrade for $400 - $600 that every component therein should be new and different.
Of course that is not the case.
Creating software is an art. I wouldn't complain.
PS. Software like Dreamweaver is a complete and restricted package of rules. Consequently, upgrades can be seamless.
PowerStore is not software, it's a package of highly flexible tools. The flexibility makes it your own and can't be upgraded in the conventional sense.
At least that's the way it seems to me, being a complete novice using tools like PowerStore.