So 1) you're throwing lighter lures, 2) you're employing steady retrieve, and 3) you're a shorecaster.
I'm a shorecaster, too, and I use steady (or twitching-style) retrieves. In the first place, the combo you have right now isn't bad at all. You said that you're attracted by the lure of high sensitivity. (Pun intended) But sensitivity is not really a necessity or even a high priority in steady-retrieve rods; it's more important for bottom-contact techniques. Although you can read some ads that tout high-sensitivity rods for stuff like squarebills, saying that you can "feel exactly what the lure is deflecting off", that's just advertising malarkey. On tensioned-line retrieves, by the time you feel anything and set the hook, the fish has already hooked itself. You may latch a door that has already slammed shut, so to speak, but you usually don't need to. I caught fish for quite a few years by holding the rod fast and reeling against the pull of the fish. It works.
Bottom contact is different.
As for casting lighter (1/4 to 1/2 oz.) lures, what @cheezyridr said about using spinning gear makes a lot of sense. Spinning casts lighter lures better, especially into the wind. If you use braid, he's correct in that you can get greater distances. Braid does have its own problems, but nothing is perfect. You'll have to decide which way you want to go.
And you said that you're looking for a "do-it-all" combo. You can do that with casting gear, but it's easier to do it with spinning gear.
One last thing: If you're thinking that "high-end" gear is going to give you a lot better results compared to what you have now, you're going to be disappointed. Better results come from the person doing the fishing, not the gear.
I wish you the best of luck. jj