No one has a "right" to participate. If you have something of value to offer, then it is a permission-less entry, if you have nothing of value to offer, no one should be forced to let you participate at their cost. If you want to mine, earn money and buy miners.
Russian folk proverb.
I'd prefer a situation where mining is suspended for the time being and maybe replaced with better alternatives. One of my favorite alternatives is rewarding the new miners with non-financial incentives like points/merits, ranking up in decentralized communities, more privileges etc. The rewards like points should only be used within the bitcoin communities.
At the moment, Bitcoin is a comprehensive solution that takes into account both technical implementation and economic tasks. In the case of “intangible rewards,” economic challenges are lost. Therefore, your solution is not comprehensive.
Im also studying different system for this, originally i come from distributed system, and blockchain is a very Nice way to solve the byzantine problem while keeping the system decentralized and without relying on trusted party.
For me the area where blockchain are supposed to be king is for digital economy, everything that can hold value and being digitalized can be put into a blockchain environment.
With this idea there can be many way to earn outside of mining. And coin price would be adjusted to the price that services provider require for their service.
Someone sent me a pdf also where it shows how this economy could work with token emission based on value of services/goods available throught the blockchain. Its the only economic model that really make sense to me. And it fit better into a classic share scheme, as share value grow with the network.
For energy grid or such the model can become relatively simple without requiring mining to emit token.
But it needs an economy outside of only trading coin exchange market.
The mining is then only to force chain progress and select branches.