I hope they are discovered on earth having already been here, (be it searching for the allspark or for some other reason... and that their mech-dino forms are explained as their old way of blending in with the old populous millions of years ago.
May as well be Jurassic Park or Terminator if they have flesh. And while its granted that the Dinobots wouldn't be blending in these days either rendering of surface texture, its be cool to see them not turn this into a generic monster movie. Besides: if we allow for flesh on Dinobots, then Bay might get the hankering for doing....... the Pretenders...... 🙁 🙁
And that clusterf*** has to be avoided....no matter the cost. 😛
It would defeat Megatron's "fleshbag/puny flesh creature" rants whilst simultaneously posing the question of: "Why bother generating human looking holograms for cover etc when they could have a real and fleshy part of them for the same purpose.
I can see them taking the alt route of 'Dinobot alt forms for Modern (GMC) 🙄 cars or military vehicles.'