Upgrading your character stats, home bases and all the other stuff will require some sort of requirement. Typically this would involve paying a fee in game currency etc.
Which method would you prefer?
1) Pay a set fee to the devs. I'm really not keen on this idea at all (TBH). I would prefer TCV to avoid pay to win as much as possible.
2) Proof of minimum balance. This would mean that you would have to have a minimum balance in your Monitor wallet before being able to upgrade that specific stat/base/etc.
It does mean you get to keep the coins and can move the majority of it back to your normal wallets again.
Each time you upgrade that specific stat/etc, the minimum balance required would go up.
3) Send any transaction with a larger fee. This would mean you could simply transfer any amount of coins from your game wallet to anywhere else using any number of coins for the transaction but you would have to pay a specific transaction fee. This would be much smaller than that required for options 1 and 2 but that fee would be given to any miner of that coin (or shared between miners at the pool that solves that block).
This could encourage miners to continue to mine the coins used in TCV and help protect the entire blockchain of each of the TCV coins.
N.B: Transaction fees are a small amount of coins that are added to the total number of coins sent from your wallet when you send them to another address. These are often used to send larger transactions and are given to those that mine the blocks that confirm your initial transaction.