I do like that they are exploring some designs. Emmerich's Godzilla design wasn't hated because they had a new design. It was hated because they went extreme and paid no attention (respect, even?) to Godzilla's historical core design, primary weapon, or personality. Legendary could do well to go with a something more progressive than simply a 21st century Heisei Godzilla or whatever and still pay tribute to Godzilla. To be honest, in a lot of those artworks I see elements I like, ranging from the coursing red streaks of fission in a couple of the designs to some of the head designs, spikes, etc. I want something that conveys menace and is updated in its aesthetics, and there are many ways they could go about it.
As I and others say, I'd rather Legendary take an extra year or two (or five) and produce an excellent picture than rush one out for us impatient fans and have its design or script a mess.
Be kind, for everyone you meet is fighting a hard battle.