That's pretty much enough for now on.
And if it would really pose a problem a hardfork would solve it but again it is not necessary.
Even if hard fork/upgrade was really necessary and needed I have doubt it would be done.
We can see that needed changes - scaling upgrade is neglected for at least 2 years and there is still no solution at hand.
If bitcoin can't successfully manage its own upgrades we might see grim future ahead.
Interesting, I think it will depend on the question whether financial institutions and governments will embrace the blockchain.
Not so much de development of Bitcoin itself, but rather the ecosystem around it.
Honestly speaking I dont think the Hard-Forks were of much use. While there have been nice ideas behind these hardforks it does not mean that the ideas are going to realize anytime soon. I saw BTG hard fork and it did not seem to get any edge over others. Then there was sbtc and lbtc forks about which I was not even aware of until HitBTC told me that I would receive the altcoins.
The concept of HF was exciting when it first happened and now its fading away.