To an extent, I agree with some of these things, but some are
pretty nitpicky (no offense to Brian).
* Destoroyah is much smaller than he was in the movie
Well, the thing with the Heisei monsters was that they were all in the 100 meter rage in the movies. So actually, SpaceGodzilla, Mecha-King Ghidorah, Biollante, Heisei Mechagodzilla, are all technically "smaller" than they should be in the Pipeworks games. Making them all larger would be jarring, and I can guarantee you nobody
would like it. (I mean, did anybody
like the giant Mecha-King Ghidorah at the end of Godzilla:Domination
?). Yeah, I didn't think so.
Then again, reaching critical mass made monsters larger, and even "turned" Godzilla into Burning Godzilla. If one wanted to recreate Heisei battles, it was easy enough to do.
* Mechagodzilla 1974 shouldn't have bendable fingers; his dorsal fins shouldn't light up; his eye beams are the wrong color; his tail is much smaller than it was in the movies
I agree. I liked the G:U version, but it was anything but accurate. The generic robotic sounds have to go as well.
* Anguirus' Supersonic Roar, Godzilla's Fireball, Jet Jaguar's Handclap, King Caesar's Laser Eyes, Mechagodzilla 1974's Flame Nose, Orga's Paralyzing Goo, Titanosaurus' Sonic Wave and Varan's Concentrated Blast should all be removed entirely (Godzilla, Mechagodzilla and Orga all have other powers that could easily replace the abilities listed)
* Biollante's Radioactive Sap Spray and Mothra Larva's Web shouldn't be able to create Beam Battles when they collide with a beam attack
This is where I can't agree at all. All of these things were added for the sake of adding variety to the arsenal of these characters. I'm also confused as to how Jet's "handclap" (karate chop?) and King Caesar's eye lasers aren't "accurate"? Orga's projectile is "goo"? Since when? He demonstrates a shoulder canon in the film, and the designers took a small
liberty with it. Not a big deal. I can understand not wanting Titanosaurus, and Varan to have beams, but I'm sure they were added for the sake of balance.
Mechagodzilla is shown to use the nostril flames in publicity photos, as well as in the original Japanese poster for the 1974 film. If we're going to remove that, we might as well remove Showa Gigan's eye laser, since he never had it outside of publicity photos either.
When you're making a fighting game, you need to give some of these monsters abilities they may not have in any previously existing media. If Titano and Varan don't have beams, then they need some kind of way to handle/combat beam battles, because sitting there, helplessly blocking your beam doesn't sound like my idea of a good time, especially not simply for the sake of a "film accurate version". This is a video game, not a movie.
Bio's sap and Mothra's silk clash with beams for the sake of balance.