I've had my 1.7i's for about half a year. If you can put them on Mye stands or Sound Anchors, it might focus your imaging even more - especially for two-channel. If you heard a difference when upgrading the tweeter jumper cable, you will probably notice better stands.
Thanks for including that detail about the LG OLED. I have a Pioneer Kuro, and will eventually be getting a new flat panel display myself.