Here I will clean up a few remaining issues extracted from your post above. (I've labeled them for reference.)
ISSUE 1. I argue that it's IMPOSSIBLE to individually vet delegates as unique IN BITSHARES because DPOS is vulnerable to SYBIL ATTACKS. This is not true for Bitcoin or NXT because you either have to own the hashpower or the stake. The ownership of the hashpower or stake is what provides the resiliency against sybil attacks in these two systems.
ISSUE 2.Are you going to try to convince everyone that limiting forgers is in the best interest of decentralization? NXT's PoS system DOES NOT LIMIT FORGERS! There are over 101 forgers securing the NXT blockchain.
ISSUE 3.Bitshares is imposing a TAX which redistributes wealth from currency holders to businesses. This is the very definition of Communism / Crony Capitalism. Being a NXT stakeholder, I would be upset if my stake was subject to a TAX imposed AGAINST MY FREE WILL to fund businesses in which I have NO INTEREST!
ISSUE 4. Bitshares(TM) is a corporation based in the United States dealing, as you say, in "products" such as "currency and commodity derivatives" and "trading services". From your explanation it seems that Bitshares is a trademarked "COMPANY, NOT A CURRENCY" selling "shares" that attempts to pass itself off as a currency to avoid US security regulations.
ISSUE 1. I discussed this in my previous post. Establishing a trusted reputation is much harder than establishing hashpower. Competition to build a reputation - the most precious of commodities - is what makes the difference. (This coupled with the certainty of getting caught misbehaving.)
ISSUE 2. Without the reputation ingredient, more forgers are better because that's all you've got working for you is numbers. Adding reputation and delegated authority to the "forgers" lets you get the same security with far fewer of them. And actually, having too many forgers works against you because it waters down how well you can vet each one of them.
ISSUE 3. People voluntarily hold BitShares knowing that it operates like a startup company with employees working for newly issued equity. People who don't understand that this is how most startups work, won't hold BitShares. Those who do understand, will profit from its ability to fund its own growth. It's a personal preference - invest accordingly.
ISSUE 4. BitShares is not trademarked and is not a corporate creation of any government. It is a free-space blockchain just like Bitcoin with zero footprint in fiat space. References to it being like a company are metaphorical to help people constrained by the Bitcoin currency metaphor to break free from that perspective and see that other uses of blockchain technology are possible.