What would you have me do? For the eleventy-bajillion-and-oneth time, a large number of so-called 'nodes' provide no value to the network as a whole. Of course, I'll probably continue to run a full-validating, non-mining wallet client or three for myself, as I like to be able to create txs that need no intermediaries.
For the twelth bajillionth time, a large number of nodes help speedier propagation of transaction information through the network. They ensure robust communication of blockchain information --- why can't you get this??
. Miners are almost universally-connected. The only study that I am aware of that ever looked into the matter showed that something like 98% of all hash power is connected at a distance of 1.2 hops (actual numbers may be misquoted by an insignificant amount - I'm working from memory here). This is the 'the network' to which you refer. The so-called 'full nodes' are but barnacles hanging off Bitcoin's network. I can get my tx to one of these universally-connected miners on the first hop. If you are unable to do so, that's on you.
All that your so-called (improperly, I might add) 'nodes' can add to this is to follow along gossipping to each other long after essentially all the miners have your tx.
What will you do when groups spam your small blocks, leading to the txs you desire unable to get included in the chain in under weeks, and even then at a cost of $thousands?
Its already happening periodically, for over a year it would seem; starting around November 2017.
https://cointelegraph.com/news/analyst-suspicious-bitcoin-mempool-activity-transaction-fees-spike-to-16I've personally watched people sending bitcoin to themselves with incredibly high fees during intermittent bursts for seemingly no reason other than to increase the average transaction fee.
Absolutely. A latent attack vector that exists as long as there is a centrally-planned production quota upon block space. An attack vector that can be exploited by competing cryptocurrencies
or by nation-states with equal effect.