I'll be honest, a 7/10 average sounds pretty damn honest to me. OoT was the last Zelda I finished (in terms of release date, at least, since I've beaten LoZ a couple of times since then) and the last time I really felt like I enjoyed the direction Nintendo was taking the series. It was innovative in its time and well put together compared to the competition of its day, but comparing it to what's on the market now (as one should do with a remake) means that serious changes have to be made to make this game as good for its time as OoT was. I haven't played it, so I can't judge that, but if it's OoT + Master Quest (I also played that) and a handful of extras plus smoother graphics, that's not anywhere near 10/10 territory. That's just a fresh coat of paint, and that's not enough. There are a lot of games that work with similar gameplay, have better graphics (and perhaps art direction), more content, and equally good stories. What do these games tend to get these days? Somewhere between 8 and 9 out of 10. If the game just tweaks what already was (which I expect) and ignores most of what has come since and delivers a product that at its core most gamers have already experienced to its fullest, a 7 is quite justified.
I'm a big Nintendo fan and, if we count replays, I've completed Zelda games far more than any other (excepting Civilization, which would be low on the list without replays), but OoT doesn't hold up that well these days. It still holds its charm, and graphical improvements along with extra gameplay certainly can't hurt that, but its charm is based primarily in a time when epic 3D adventures were an experiment, not par for the course. If this game were simply new, it'd get lumped in that 8-9 range too, and being that it's not it's quite reasonable to see it a point or so lower. OoT as it was with a graphics rehaul wouldn't score over a 9 today, and certainly not a ten. It got a lot of its praise for being an innovator, and now that it's 13 years old it doesn't deserve extra points for doing something other games hadn't done 13 years ago when so many have since that time.