Well..here's my take on it. Where as i think it is a great idea to keep Cv3 as canon as possible..their are areas of the old game..in which i feel had been redundant,more or less repeating, wtih the same enemies/bosses,traps. Plausibly i think it makes a bit more sense to make a remake/revamp because adding in more elements, so long as they fit, maybe a good thing..to much and it becomes a bad thing. I am all for keeping in the regular enemies mainly..but adding in a few new ones here and their for more of a challenge(the pirates in ghosthip are a great example of that. Another good exaple retro and i have talked about is cave trolls in cave areas.. Stuff that makes sense. Possibly a wak wak tree in a forested area.
Where as i dont think the game should stray far from the original on terms of design..i do think thinks can be added to help with the eye candy as well as difficulty of the game.
As for what retro said..we are trying to keep the lore of vania strongly in place..so yes..though the flying skeleton's pattern is just a plain medusa one..eventually we'll fix that.