So right now the genesis block with over 100 coins could reseed rewards for all of 2069 and boost block reward from
If anyone wants to increase the reward of some future block, then it can be done explicitly:
You are free to send coins to addresses like bc1qqph8gusf2x7ch4xjs8vnp7hy449r929wnv5jggmy678gam85l6rqgajus9. It has "1000000 OP_CHECKLOCKTIMEVERIFY OP_DROP OP_TRUE" script, so it can be claimed after a block 1000000 by any miner.
And then, no reboot is needed. Just type the block number you want to increase reward for, derive a new address from that, and deposit coins there. Miners will move them, if they will have enough incentive, to do that in the future (it will be spendable by anyone, but miners decide, which transactions they include, so they can always replace it with their own, because there are no signatures, the only lock is time-based).
Also, if you want to move some coins N blocks to the future, you can use OP_CHECKSEQUENCEVERIFY instead.
Edit:
make the chain do 4 blocks an hour not 6. which means six year halving time.
In the pre-release version from 2008, blocks were produced every 15 minutes, instead of every 10 minutes. And the code, used by Patoshi, still used that 15 minutes interval (which is where "5 minutes offset" comes from).
If we could get enough funds into the genesis block it is fully working and doable plan.
It would be much better, if users would deposit their own coins, instead of stealing donations from Satoshi.
If miners need funds from sources outside the transaction fee revenue, which will be the primary mining revenue after year 2040, then bitcoin is just not going to work over the long term.
You should look at some sidechains, and how they work, to understand the problem. If you have only fee-based reward, then once you have 0.01 BTC, another time 0.02 BTC, and yet another time 0.10 BTC. It is unstable, and making it more evenly distributed, by using some timelock, is a good idea, and it is how some sidechains decided to deal with it.
Because if you have rewards, jumping up and down, then the incentive to keep mining is changing too fast. Only today you have the luxury of seeing a quite stable situation, because the basic block reward is still much higher, than things you can get from fees. But still, there are
some unhealthy spikes, usually during halvings, or other rare events.
Messing with block interval times is just mind-boggling stupid.
It shouldn't be done in the main network. But it can be done in sidechains. Also, making the block time longer, is quite safe. Making it shorter is more dangerous, and that's why P2Pool couldn't scale further, when they went from 10 minutes to 30 seconds. They couldn't go to one second, or even milliseconds, because then, the game stops being a lottery, and starts being a race.
So, if some sidechain would decide to make a block every N mainnet blocks (for example where N=1.5), then it would be safe, as long as N>1. And it was proposed for sidechains to use N=13150 (around three months) to be safe.