I agree. In this situation, It's good & perfect solution but not permanent solution. We also need to think of the future. Because Day by Day the number of newbies will increase. Oneday 600 k can not be able to control according to the increasing rate. Because the resource will not increase according to the users increasing rate.
1st. We need to encourage our user not to power down.
2nd, We need to follow the model of @cryptokannon's publication which was on 500 sp to 500K sp account. Think you had an community acount which 50000 steem power of its own. Which you can used everyday for curating your own people. Then you are also geting the vote of 600k sp hold account.

3rd, Before recruiting a newbies we need to understand the potenciality of that person. Can he/she adopt the system?

For the future purpose Of Subcontinent this delegation of 600k can play a vital role.