Do you have a problem with the attack tables themselves, or do you have a problem with rolling twice for every single attack, with the second roll being unmodified ?
I am moving away from using the attack tables and the crit tables both, mostly because of the tables themselves (I will eventually tweak the system again to get an attack result from a single roll, but right now, I'm still using two). I wanted to be able to get the outcome of the action from a single generic result table. So I have a single action table which gives me standard outcomes depending on margin or success or failure (basically, 101+ is a success, and every 25 above the success threshold is +1 quality - and reverse for failure).. Then I have a subsystem to get wound level from weapon, location, armor and QoS (which brings the random factor), and wound level x attack type gives be the effect (additional hits, bleed, stun, nerve damage, fracture...). It's heavily inspired by the Harn combat system. I used the RM weapon tables for calibration of the various weapons and natural attack skill modifiers and for basic concussion hit effect calibration.
But my main reason to do that was to get rid of the dozens of tables RM is riddled with and which are a huge turn-off for most players... without getting rid of the various damage types at the same time. I ended up making the wound level determination non-linear, but that was a side effect.
The main point is, I had particular reasons to do that and I hacked the system to achieve specific goals. Why is why I'm asking why you want to get rid of the attack tables.