Not sure why, but also some of my questions that are technical never were answered
That's because earlier you claimed NONE of your previous questions were answered, and that's grossly incorrect and provocational statement. It makes you look like a troll, better ignored because it implicates you'll accept no answer as valid. Commenting this now risks escalating your inclinations for non-constructive further argument, but maybe we can keep it down to earth.
1. Why did you chose PoS? Why do you believe it's a good solution for a project like this one?
It fits our technology well. Not so perfectly as an economic system, but technically as the consensus solution it's very robust. Also all the work on open source FIMK and NXT, which we know thoroughly, is there to be reused and leveraged. It's very hard and demanding to come up with well working consensus and p2p code from scratch. Those resources are better spent elsewhere and use the wheel that's already invented.
2. Don't you believe that PoS leads into centralization over time and a weak system?
Some centralization is to be expected with time, as we know through long experience with FIMK. But no that's not our concern on business platform like HEAT. Because HEAT isn't primarily a currency, and it has very little to do with attempts of solving any distribution problems. HEAT's focus is on the tokens enabling the technology. Here it doesn't matter whether even a single entity would hold most of the tokens.
3. Why a pretty high inflation for the first four years and a hard cut down after the fourth year?
It's part of the token distribution, which is an incentive for initial adoption and p2p network nodes through the relatively high block rewards. Your inflation figures were off BTW. It's more like this:
Year 1: 40%
Year 2: 21%
Year 3: 15%
Year 4: 8%
Year 5: 2.5%
Then getting lower each year.
So what you could do is regard the token supply of 50M HEAT as the base amount. It's just divided over 4 years. The token supply inflation after that is very low. And we're still considering the options to even be able to burn some through one of the multiple involved fee processes.
4. How do you plan to implement Fiat into a multisig-wallet?
Fiat will just be one base pricing asset (token), similar to a token that anyone can create on the HEAT blockchain. Those tokens will have multi-sig capability. When a licensed money transmitter operator (our JV partner, or someone else) comes to create their multi-sig tokens that represent their fiat currency operating under goverment authorized license, there we have it. Nothing difficult technically, more difficult bureaucratically. And we have exactly that more difficult side going forward well.