Great question. My previous game was 1987-2010, so starting in 85 is already vastly different as I get to use certain stars a different way (for example bringing in Jerry Lawler to the WWF, build new tag teams, and MOST importantly, I was able to convince Jesse The Body Ventura to return from retirement. Plus, TEW 2020 has already thrown me for a loop when Andre the Giant decided to leave for politics. Which sucks because I wanted to do some things with him before he started to decline)
I'm also going to run JCP for awhile (or I may make them my main company). I want to see what would happen if Magnum TA doesn't get hurt. Also, the tag division alone is worth it.
So to answer your question, yes. Some things will not change, as I do love certain events from real life (Michaels vs. Jannetty (but what promotion?!).
I also want to finally have a good run with Yokozuna (my favorite as a kid), he hated me in my previous game so he would never sign.