I think that even if you're a Bionic Commando purist (is there such a thing?), you'll still really enjoy it.
I haven't gotten too far into it yet, but so far the level layouts, enemy positions and such all seem to be identical to the original. You can do a couple things with the claw that you couldn't before, like grabbing and throwing barrels and I've heard the Albatross at the end is a gigantic level now. For ten bucks, you can't really go wrong.
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Currently Playing: L.A. Noire
Currently Listening: Tyler the Creator - Goblin
Currently Watching: Workaholics, 5 Deadly Venoms