The block reward system for the forging looks interesting but I would prefer that the block reward be on an increasing trend instead of declining so that it would be more well distributed between the  early adopters and the masses.
Also, the early adopters have an incentive to stay vested and be forging for a longer term rather than cashing out early. Perhaps the developers can consider reversing the amount on the block reward, something like below?

# Extra block forger rewards

Each block forger gets both the transaction fees and an extra block reward that halves every ~309 days (889.920 blocks). There are 4 stages:

•Stage 1. 25 FIMK (Total 177.984.000) (DAY 0 to DAY 308)
•Stage 2. 50 FIMK (Total 88.992.000) (DAY 309 to DAY 618)
•Stage 3. 100 FIMK (Total 44.496.000) (DAY 619 to DAY 928)
•Stage 4. 200 FIMK (Total 22.248.000) (DAY 929 to DAY 1238)

Just my 2 cents worth