"Perhaps as these ecosystems evolve, there will come a time where a blockchain doesn't allow for such hoarding, something like a countdown timer - where your unspent balance is reduced over time, a sort of incentive to spend and not save. aka - boost your economy."
Umm, what? Will someone please explain to me what is wrong with "hoarding"? It is called savings. If I earn money it is my right to save it, spend it, whatever. It is not your right or anyone else's to force someone to spend their money. You do realize you are advocating what central banks are doing by creating negative interest rates and punishing savers and investors and trying to force them to spend their money.
Perhaps we have a fundamental difference of what an 'economy' is? I tend to envision an economy is where goods and services are freely exchanged and traded, not a place where resources are hoarded (to the detriment of the whole.) There is no forcing to spend in my illustration. You're welcome to save and hoard, but to maximize your buying power, you'd want to actually contribute to the economy, versus extract from it.
saving money is not a detriment to anyone else. this is ridiculous. Freely exchanged and traded is by free will. Yes, by definition, you wish to force people to spend. At any rate, your model is the same flawed model we are operating under now. i.e. spending is good so we need to create a credit bubble to give people ever more money to spend to "help the economy"
The "stick" approach, where your buying power gets reduced overtime, is clearly a non-starter. I regret framing the idea that way, the "carrot" seems a much better way: Provide an incentive to spend the credits sooner rather than later. Say by a diminishing reward/bonus for doing so. Saving is fine, you can still accrue interest at market rates, but if you spend newly received inputs, you get a bonus for doing so, that bonus would rapidly reduce.