Is it me? Will I ever be satisfied?

It sounds to me like you need time with your system. This hobby is a lot more subtle than we expect, a new system must go ‘crash, bang wallop’ for it to impress, but that isn’t what a capable system does. It took me a few months to fully appreciate what my system did, it delivers music so smoothly that it makes me sit and listen for hours. Now I understand it, I know exactly how I want to improve it; for rock and such I want more slam, so I’m looking into a subwoofer. I own a Gallo Acoustics TR3, the original, and it doesn’t quite deliver what I want hence why I’m looking at a new one. It was easy for me to hear what I want, because I was so familiar with the system. Similarly I know after that a new dac has to deliver on maximum clarity, I have a well damped room so I can afford to chase detail without worrying about bright fatigue. 
It’s easy to get a new system, expect the Earth to move because we are so attuned to bass heavy Bluetooth speakers and car stereos that we completely miss what the system is doing. Give it some time, patience will massively pay off in the end. I know you’re listening for a week, but honestly it took me at least two months to truly fall in love with what my system was giving me. Your ears will hear more and more of it as time goes and that will give you what you need to make wise additions/changes. Otherwise I guarantee you’ll buy something that perhaps you haven’t auditioned at home and be right where you are now. And if you just go for ‘loud’, you may be impressed at the start but in time you may find the system exhausting to listen to and realise that isn’t necessarily what you wanted. 

Ok the Bluesound is a decent digital transport as long as you use an external DAC. I recommend an “analog” sounding Lampizator Baltic 3 for that. You should also look into the Auralic Ares G1 or G2.1 streamer.

Those old transparent cables are sucking the life out of the system a bit. Try Shunyata delta or alpha level power cables (do not get the noise reduction connectors for the tube gear get the XC not NR…NR is for solid state and does weird things with tube gear I tried them with) and then for something accurate for speaker and interconnects an American company called Kubala Sosna you will find has more resolution but won’t emphasize treble or sound weird like other brands and I recommend Temptation level in the middle to start. That’s what I use in my YG Accoustics Carmel 2’s. Your B&W speaker has a more forward sound with the diamond tweeter and you need a cable that is accurate and won’t turn them into double treble murder canons. GTT Audio can help you with the cables and maybe upgrading the streamer to the next level with an Auralic Ares. Fred can help you over at Lampizator North America since they sell direct. Sources are all neglected it’s not just the amps. That old Linn is cool but a better turntable is a Kronos Sparta 1.0 that has a counter rotating plater underneath the main plater to counteract all vibration but turntable last.

Amps to look into are Belles Audio….Think Pass Labs and McIntosh with more resolution but better value. Audio Connection in NJ can help with them and they will  go perfect with your new preamp. You just need a Belles virtuoso stereo amp. 
If you can swing it try Mola Mola Kalugas they are class D and pair great with tubes and the treble is sweet and slightly rolled off to curtail the diamonds. I am 40 so I tried a lot of new tech most people refuse to try. The Mola Mola needs to be plugged in a whole day before they are ready to do critical listening. 

You know what helped me…? Listening to sound systems in my local shops. There are three places not too far from me and they each have a different approach and different gear. I listen to mine, and then I listen to the $280,000 system at the dealer and I don’t feel too bad…! Mine sounds close…but I can hear the room for improvement. Not having an unlimited budget makes each step exciting and semi torturous…

Nothing a few weeks in therapy might Cure. I’m having a blast. Hope you are too.

Fix the room 1st. Treatments? Using the rule of 1/3’s, 1/5 for speaker placement. You don’t need equilateral setup, if you read Jim Smith’s book/video, he uses 85% (?) distance between the speakers to how far you are away from them. Also, you probably don’t want those tweeters beaming straight at you, try forward facing with little toe in, Then get a McIntosh or Classe amp to tone down the sizzling B&W speakers. Every dealer I saw with B&W speakers always used these amps for good reason, remember B&W bought Classe years ago which were warm sounding amps. You have a weak digital setup compared to your other audio components. Get a good external dac with Ethernet and/or i2s, there are many from $5k up, move the bluesound to a bedroom or an area used for background music and use a computer with roon or get an Auralic Aries/gx or nucleus if you don’t want to deal with computers. If you cartridge is old, get a new 1 or get yours rebuilt.