In that case, that coin would really have a good potential. I cannot see any new coin that can replace bitcoin yet. As we all know, a lot of people already trusted bitcoin and they consider it as the main currency because it's the first cryptocurrency to become very successful and bring convenience to everyone.
I agree with your opinion, no one can change the position of Bitcoin, in the whole world Bitcoin is number 1, it has become the trust of all people for the use of bitcoin, which has a long term.
A lot of coins in the market can surpass bitcoin when it comes to potential and use but bitcoin's popularity and it's reputation as the coin that started it all will most likely secure it's spot in the top. It would likely remain there for a good number of years more until crypto becomes mainstream.