2. On long term, would usage of Ordinals have good impact on Bitcoin price?
The question perhaps should be, "Would Ordinals usage increase and therefore increase the demand for block space"? If the answer is "Yes", then I believe the demand for Bitcoin would also increase.
Another question, "Would high fees (caused by usage of Ordinals and other similar protocol) lead to decreased usage of Bitcoin for another aspect (buy goods, paid for service, etc.)?"
If only bigger maximum block size only lead to bigger storage requirement.
And to what other requirements? Ram, internet speed? Should we also compare those to the Satoshi era?
Centralization because people can't afford to run a node when we're talking about ASICs in the thousands of $ that are close to not even working in a normal house without modifications to the breaker and powerlines?
I'm
genuinely curious about what is so threatening about increasing the size by a factor of 2 or 4 for example.
I've yet to hear an argument about how doubling or quadrupling the size of the blocks will be a bigger threat than the spam attack that turns users away, the centralizations of mining pools of farms, the near monopoly in mining gear production, the already enormous percentage of nodes hosted in data centers, and so on and on!
1. I'm actually in favor of maximum block size increase, as long as it's
NOT based on arbitrary number or very high increment (e.g. 4 million weight unit to 100MB).
2. Other requirements? Aside from what you mentioned, i could think storage I/O, CPU speed and internet latency.
3. Miner generally don't run full node and mining pool definitely can afford very fast computer/server. The concern lies within individual and small group who want to run full node.