(( Hey Doc J,
I started with 5th Edition. I still have my Empire Book that lists all the old, metal models, and their various part numbers. Shoot, I really miss being able to field foot knights, and that our 5th Ed knights had Initiative 4.
Anyway, for me, 6th and 7th were an improvement over 5th. But 8th... kinda felt like a lateral move, instead of a game improvement. Some things I liked, for example "Step Up", random charge range, and an increased usefulness for musicians... some things I thought weren't well thought out, such as how Cavalry doesn't auto-disrupt on a flank charge, the inability to attempt to counter Irresistible Force, and fuzzing of who can shoot due to "True LoS". As such, overall, it didn't feel like an improved refinement to the game. To me, it felt more like when Windows went from WindowsXP to 10.
For the Empire in particular, in 8th Ed, I liked the idea of Demigryphons. I felt it fit the fantasy part of the game, and still blended with the historic/lore/mythos idea of griffons. I didn't care for the new wizard chariots... as they seemed more... goofy than anything. Also, not a big fan of lit candles being held with a headband. The tank... can go either way with me. It looks too... steampunky... but... it does kinda fit the idea that the Empire tries to expand on its magic called science. I do think we should have gotten either the tank or the demigryphs... but not both.
For esoteric reasons, some of the oddball things I didn't like:
1) The dwarven move away from anything wood/canvas. I was half expecting the dwarf resculpts to be wearing stone-and-metal pants.
2) More-and-more skulls and slack jaws. I'm not a big fan of my models looking like window lickers and mouth breathers. I'm even less of a fan of slapping skulls on skulls on skulls on skulls.
2-A) Also... bone doesn't tend to bleach-white. It tends to yellow and deteriorate. Though... I guess white does give it a more horror look.
3) Overly dramatic poses. I don't mind the occasional "sword stab at the heavens" pose... but an entire unit looking like that, makes for a pain to assemble, as well as get to fit on the bases.
4) Carriage-Mortars. I know they existed... I just like the mortars that are more stumpy, and look like they are using a mortar-priming-plate.
5) The flappy-jackets of the outriders. Just... think they don't look terribly good.
6) The more... androgynous (?) look of the deamonettes. I thought the old-old style of demon-girls with lobster claws was cool. I even thought the update to girls-with-corsets-and-blade-arms looked kinda neat too. But... never really liked the androgynous look. Yes, I know Slannesh is whatever, but... *shrug* I didn't like the look.
Anyway, overall, to me, 8th is better than 5th was... but it still only scores about a C+ / B- ))