They're not getting screwed... I'm an early adopter, a relatively late one at that, who was "only" able to grasp 0.5% of the economy at the time... how is getting 6 figures of free money being screwed? What Bitcoin needs is people to have well-placed faith in it, that won't be exposed to a systemic risk of being screwed just by buying BTC. Those poor other early adopters for whom a six-figure gain isn't enough, they need a 9-figure gain to not be "screwed" for the CPU time they spent running a free mining program in their spare time.
Your proposal is what screws early adopters here. You didn't get free money. You spent $20k on things that later turned out to be much more valuable. No one knew, when you put 20k in, that this was going to be big enough for that 20k to have a 1000% return. Especially when you put it in, you were more likely to end up with 20 cents than 200k.
You risked a large quantity of capital in this currency and there is a commensurate reward for that. The less "proof" that you needed, i.e. the lower the price of BTC was when you bought in, the more reward you received; by the same token, the less "proof" that you had, the higher the risk was that your investment would be worthless. Further, your investment constituted a "vote" of sorts - a 20K USD buy on a public market would be a contributing factor to another potential investor looking for "proof" that this is a good investment. If that investor then buys BTC and pushes the price up more, did you get money for nothing? No, you provided an investor with some information, and he paid you for that information.
You also haven't really explained what is going to make BCP somehow a solution to this problem. In the beginning, BCP will not have a high difficulty. There will be a few miners who switch over, just like Namecoin, but for the most part, the BCP blockchain difficulty will be a pale shadow of the BTC difficulty. In this period, people will mine blocks and receive BCP at some arbitrary rate. Perhaps they will sell those BCP to other people for another currency; later on, if BCP catches on, those BCP will be worth more. The only difference will be, instead of the question being "Can a blockchain-based decentralized P2P currency catch on?" it'll be "Will
this blockchain-based decentralized P2P currency that competes with Bitcoin catch on?"
And people who predict the answer to that question correctly stand to profit. Just like Bitcoin.
In any case all of this arguing is pointless. I am with the others who say, if you want to create a better bitcoin,
Fucking
do it already and stop talking about how the current bitcoin is worse than the unicorn in your head.
It's like listening to people talk about how unannounced or unreleased tablets are going to be better than the currently shipping iPad. Maybe they will. But no one knows until it comes out. Similarly, if you think that this is going to be the Wave of the Future, then just fucking do it and stop talking on forums about it.