Isn' t NAV coin the only coin that doesn't require a minimum amount of coin in the wallet to start staking?
For example:
PIVX needs 10k coins
DASH need 1k coins
etc..
I got another question is there a Max stake ? (that motivates people to have medium size blocks to keep the staking moving along at an even pace?)
PM me for example coin(s) that do this I don't wanna advertise other coins in here

It doesnt matter what size your inputs come in. In time, with staking, the wallet will break the blocks down to small pieces and use them optimally