I used to decry the dimples along with the key safety and plastic trigger guard, but then after Dremeling them out of mine, I realized they served a useful purpose of allowing rapid barrel changes on a sporting weapon. I wish I had left mine in and bought a separate 870 to make tact-i-cool.
The plastic guard is part of what makes the Express cheap. I don't like it, but that's what Wingmasters and old Police models are for.
And the J-hook safety does appear to be gone thankfully.