I think the 5000 deposit to receive SRS is a bit higher than it should be.
Even masternodes doesn't require 1000 x block reward to create.
where is 5000 threshold? i don't see any threshold from dev.
Look here...
Distribution
SRS tokens will be distributed through a smart contract which will reward every Shaft owner with SRS tokens accordingly to their shaft balance. Starting with deposits from 5,000 Shaft every miner would receive 8% yearly interest rate paid in SRS. An interest rate of 0,66% will be paid in SRS tokens every month. For example, if you own 10,000 shafts you will receive 66 SRS tokens every month. More SHAFT means more tokens!