Multi-tools are compromise tools. They have to be stainless because where they are taken and commonly used are often high moisture environments (think snow climbers, etc.).
The only other option would be to make each piece out of the optimal steel for that piece, then chrome everything. I think that would still end up being a compromise tool in many ways.
Generally speaking, I'm pretty happy with Leatherman's tools, and I have found for me that Leatherman has the best quality.
I think the only thing I'd really ask for would be an S30V blade option on their multi-tools.
I have the Surge and I think it is a pretty well thought out multi-tool. The replacable saw blade that uses the Bosch style saber saw blades was an elegant solution. I like their diamond file, which can be used to sharpen the knife blade if you ever get truly desperate (survival situation, etc.).
I think if you find you're using the pliers a LOT, and consistently mess up your pliers...well, I think you should buy a pouch to carry actual pliers.
I personally think they're great for most things.
For my daily "desk job", I still haven't found anything better than my Swiss Army Knife (Huntsman).