First I want to mention that I don't want to spread FUD but I want to let others know what to expect from this project, as for me the experience was disappointing.
OK, so here is my experience with Espers coins:
First impression was not good, when I saw you need to wait 1h+ to get a payment confirmed (10 blocks - 1 block is mined between 5 to 10 min) which is worst than Bitcoin's tx (here you need 2-3 confirms).
Second and the worst.
I bought around 40 million coins on February 06 and staked them 24h, 7 days a week for 1 month now. The interest was only 150450 coins instead of aprox. 822000 coins (27400*30 days) what should have been (10 millions/365 - supposing I am staking only the initial amount). So the interest is not 25% as the whitepaper says is much more less, around 4.5%.
After I saw this I made some digging and saw that in one year the total supply increased by only 9.3% (current supply - 1 year back supply) from POW+POS so my guess was correct, since the blocks are split 50-50 to POW-POS the POS is around 4.5% annual only.
Peace!
Good observation. I wonder where the 25% comes from?
I tried to stake Espers about 18 months ago and it wasn't staking well compared to many other coins. But those many of those higher staking coins have a problem holding a team together now. Espers is like a middle ground coin: staking might not be high but at least there seems to be more than one person behind the curtain. I have 3 computers that only stake wallets and I can let you know some good low entry higher staking coins if you want. Many of these are 4 or 5 years old.
I bought because I like POS coins, those with mid-stake interest like Espers, Electra, Bean Cash, Linda, Shardcoin, etc. But I really don't like coins with under 10%
maybe only NEO and ONT. I will move my money from Espers to Ontology or NEO since I get a better ROI and I don't need to keep the wallet open at all.
Regarding the team I don't know what to say, I saw the dev working on other projects too (see his last posts+github). No wonder why the roadmap is so delayed... nothing new since Q1 2018 and this is sad.