That's funny, I think v3.5, Pathfinder, and 4e have the lack of depth and customization. Almost every feat is based on combat. Every power. And it forces you into
classes! What is more of a
straight jacket than a class?
A system that due to limited attribute points and edges, forces characters to specialize in order to be effective?
In AD&D if I wanted my fighter to be intelligent and charismatic as well a being a good fighter, it was simply a matter of rolling well. In Savage Worlds, that requires assigning points away from the attributes and edges that make one an effective fighter.
Of course one can always get a couple extra edges by taking flaws. I really truly hate systems where in order to be competent you have to post a "screw me over GM" sign to the character's back.
Savage Worlds has no classes, if you want to be a spell casting swashbuckling swordsman, you can be!
At the cost of being ineffective at both roles. The limited number of edges and attribute points available, plus the importance of edges means that specialization is pretty much required.
And as long as you mentioned spellcasting, let's talk about the magic system, which is evidently designed for those people who disliked all the flexibility and options in 4E. You start off with three incredibly generic weak powers, along the lines of "magic missile that's not as good as a handgun", or "magic mail armor" You are then stuck with those three powers for the next however many game sessions until you can buy a new power. Joy. Admittedly I'm biased in that I usually like to play mages, but if my character is going to be restricted to being magical field artillery, he should at least be effective artillery. But at least I'm not as bad off as the poor sod who decides to play a mad scientist.
Savage Worlds seems pretty well designed for one particular style of games- pulp style ones where an investigation leads to a quick and lethal yet detailed combat. It doesn't seem much good for other styles of game. If I were to go for a simple system, I'd rather use a much more flexible system like PDQ# or FATE 3rd edition.