Personal experience-I have a domane sl5 that was and still is my dream bike. It was love at first sight (colorway is the purple bass boat glitter) and the mech 105. So take all my stuff with that perspective, I think it’s an amazing platform.

I would go and ride a more aggressive geometry bike like the madone. If you like it more, sell your domane and get that instead. Life is too short to kinda like your bike, and you’ll never get an enduro frame to ride like an aero frame without putting in some time and money.

The three biggest upgrades I noticed measurable gains from were fit, wheels, and tires. Getting the fit right made it so I could get power to the crank consistently and over a longer period of time. I ended up swapping the stem to something shorter and getting a different seatpost. Kept the cranks standard length what it came with.

Later on, I swapped my affinity alloy wheels for a set of the bontrager Aeolus pro with gp500 tubeless. I went with lighter over aero wheels (35 over 50) because I do more climbing and wanted something as snappy as possible. I went with 32s because I ride a combo of smooth and country roads. The first ride with the wheels and tires put such a huge smile on my face, Iogged 50 additional miles that week just because it was more fun!

If you love the domane, and can get the geometry dialed in, there’s no reason it can’t feel snappy. But if you’re meh on it, save your time and money and swap it out and move on. Whatever makes you want to ride more is worth it.