My system is also a year old, so I haven’t tired of it. I will likely continue to make small, incremental changes, like cabling, but likely nothing very big.
My room/house is a limiting factor, as I am not moving and there are only two rooms large enough to put the system in. One room is off the front door, and I don’t like the idea that anyone coming to the door can see what I have — don’t want to encourage theft. So I have just the room I use now, 14’x19’, with a large fireplace along one long wall. The short wall I am using is a bit cramped, especially as there are two doors in one corner and an open entrance at the other corner, and I need to maintain traffic access. I can’t have my floor-standing speakers out into the room as I would like. The other long wall is opposite the fireplace, so I guess I would need to choose to seat facing the fireplace or the stereo, not ideal. The other short wall has a large window and would not accommodate my large TV. So, compromises. One advantage I have is no other person to have to please other than myself.
The guy I bought my amp from was in his 70’s and down-sizing, which seems to be a common move — smaller, lighter but high quality. One thing I have considered is getting a tube preamp in place of or as an option to the Parasound P5. I’m really not one to want to box up and ship a lot of packages, so instead of trialing, I would rely upon reviews and perhaps go to a locale hifi store to listen (of course, nothing about that would match the equipment and room it would be used with in my home). This buying and selling and trialing, with all the packing and shipping seems like a hassle to me.