Am I the only one who dislikes the GNB changes?

[CKNovel]

You could already do that BEFORE Sonic Break got locked behind No Mercy, and this the one change I don't like as a 30 second cooldown reduction on Sonic Break makes more sense at this point... with Bow Shock also getting a Duration increase to 30 seconds and a cooldown reduced to 30 seconds as well...

No, before you couldn't delay your Sonic break otherwise every next use would suffer from that delay.
In EX1 you can delay Sonic break use in a 60s window to have it on the add rather than the boss that is about to disappear.
Next NM window, you'll have Sonic break not delayed and able to use it earlier. And since SB has a 30s dot, it's great to be able to shift it around in your NM window.

Another example: On MCH you can also use Chainsaw on cooldown but hold Excavator to strike both the feather and the boss.
We have more flexibility on tools rather than blindly using them on cooldown or delaying them and having them permanently delayed.

Yeah thats a point I can get behind. I kinda wish the Lionheart combo had continuations in it. Even if the effective damage was the same as now.

Lionheart exactly exist for the purpose of removing the oGCD bloat GNB suffered.
Remember that in EW, Gunbreaker 120s had 8 oGCDs spread over 8 GCDs during its NM window. When you needed to kitchen sink mitigation, it simply sucked.
In Ultimate it was especially tiring.