What do you mean? To sign a block anyone'll need proof of... what? Instead of stake. Equal chances to all forgers? It'll decrease natural PoS-protection — attack'll become cheaper, won't it?

For klee:
1 coin = 1 perfect rig. Almost 0 amortization, we've to keep entropy as low as possible, haven't we?

That's not about reward. Mining or forging needed for keeping crypto run. Reward is stimulation, forging takes so small effort, so I'd forge even for free, if it would set that way. But balances+txs+fees=0 make sense, so makes sense >0 fee to make both txs'es senders compete and avoid spam. Maybe 1 NXT soon will be too much though.

That's incorrect point with Nxt.

Do the math. For eye's estimation current distribution of wealth almost the same for bitcoiners and nxters.

Valid. It's an equation: at some point big amount of coins hurting you versus potential scenarios. How much? Well, Satoshi's funds doesn't stop Bitcoin from spreading so far, so u can estimate deadly %. Even XRPs are trading, for God sake  

U can't provide value. It's generally relative thing. And PoW just getting oldtech as block's signing system: too much effort, same result.

Excuse me? They will. If Bitcoin'll get even higher success (as u suggest — to spread the word, for myself I was going to non-profitable-Bitcoin-mining as form of supporting the idea until I read about Nxt), any holder'll become richier.

"Outcome bias", bro. One of the cognitive ones.

And 2 cents about ROI%:
ROI% of mining PoW-currency (any) can be very high. There's already market of rigs for BTC for example. But it's not a passive income. For profitable in long-term mining u'll need or arms race (CPUs, GPUs, FPGAs, ASICs — check, what's next?   ), or coins-to-mine race (BTC, LTC, 5 more, 10 more, 50 more — check), where u've to be with or most powerful rig, and/or to be in best currency to mine at that moment. And we'll get some field of decisions (rig/coin in dynamic) for "+" ROI% of mining.