First of all, I am a huge Mass Effect 1 and Mass Effect 2 fan.
That said, I am a bit concerned about the next game in the series because I strongly dislike the "exploration" in DA:I and would be grateful if I didn't have to drive around with the Mako for hours (and hours and hours and hours...) picking "space flowers", mining Element Zero, shooting respawning space bugs and doing simple MMO style fetch quests. Simply said, I consider exploration in DA:I to be repetetive, uninspired and boring filler content.
TBH I only liked driving the Mako in ME1 when it was part of a mission. The Firewalker DLC with the Hammerhead was pretty cool and very enjoyable, although it would indeed get very boring rather quickly if it was a major part of a 60+ hour game.
I really liked combat in Mass Effect 2 including the encounter and level design. I will just assume that combat will be improved upon but otherwise stay pretty much the same.