Interesting ideas o.O
"can made it be legendary" : thank you, i hope we can get there at one point :)
"breasts" : i'll give it a try
"other modifications" : sorry, these might get a bit hard. I've forgotten about the voice pitch, i'll check it out.
"interior" : hmm, still not quite clear on this. I'll have to do some research -.-
"bulge of the orc penis through the body of the girl" : i was also thinking about this idea, however i'm not sure if it'll even be noticed (seeing as pregnant belly is barelly noticable). I'll try it out and see how it looks first
"bukake" : actually the approaching orks could do this. I'll check the system if facial cover is possible.
Thank you for providing a detailed list of suggestions along with the reference games. I'll see what i can make ^.-