Synergistic cables will help a lot. They won't fix the B&W top end nothing will but they will help a lot by balancing it out with a bigger fuller deeper all around sound. Also Green Dream PHT on the cartridge will help with a more liquid sound. Black Beauty are good too, very neutral across the board clarity, and both can be used together. Their new stuff is best but they have been making so consistently good for so long there's a huge supply used so that you can pretty much shop by price and whatever level you are at there will be something good.
Nobsound are very good, I used them extensively for a while, but Townshend Podiums will be a huge step up. Huge. Even compared to Nobsound.
Room treatment, I know what you mean. Synergistic HFT are very unobtrusive room treatment, especially if you get them for the speakers as I recommended. That is why I recommend them first even though everyone says do the room do the room. Well the speakers are in the room. So do them. Same product, same results, just stuff stuck on speakers is a whole lot more acceptable than stuck on the walls. Either way they greatly improve clarity, help make speakers and room disappear, deepen and broaden the stage, etc. Really impressive for how small they are. They also make it seem like you have to get one kit per speaker. That is best, but you can also split one kit between two. That's what I did in the beginning when I wasn't sure. Works fine. Study their info, the same HFT are used on the walls, so once you have a speaker kit you can experiment with more than just the speakers.
The vibration tape is TA-102 fO.q tape sold on eBay or maybe Amazon. Also Cable Co has it but higher price. The price keeps going up! I don't even want to look any more! 😂 But it works so well you will not believe. Very small strip run along the under side of the tone arm, and then just keep looking around it works on everything even chassis of phono stage, caps, etc. I've never been able to use too much but one guy wrapped his whole arm and said that was too much, so go step by step a little at a time you will see.
Purple fuse is Synergistic. Sold all over the place. I like Betty at high end electronics, she has always been good to me, even helped me get an extra Green Dream. They come in pairs, Green and Black, but she figured out some way to help me out, I forget, couple years ago. Friendly and with a little friendly talk you might be able to learn about any upcoming deals. I got a lot of mine buy 2 get one, or buy one thing get another free. Might be running something like that this time of year. I wouldn't know, all tapped out! 😂🤣