Just a quick question regarding the bitcoin protocol,

I was contemplating making an altcoin for a school project, idea is initializing addresses with 1 coin balance to start, and people would 'mine' by generating addresses and sending those coins back to another address -their main address.

However I was wondering, would it be possible to implement a limit on how many transactions 1 node/connection can make to the network? Or would there be no way to do this, and my coin would be broken due to thousands of transactions per second coming from 'miner' nodes? -Maybe there is a computational issue with this idea anyway, would one node be even able to send out that many transactions anyway?

I've had a little look at the bitcoin wiki and it states currently it can handle 7tps, what happens to other transactions, big queue? Would the queue getting huge cause no problem or can it cause problems? Would a change to the codebase be able to fix this? (Add a limit to nodes max tps) like I said above, is this possible?

Any discussion would be greatly appreicated, thanks.