Hi grabah.
The cover save system the use now is 'simple resolution' 'just roll a
D6', at the expence of system definition.(The chance to see -hit is lumped in with armour effects.)
Most other rule sets I play clearly define in game actions and what they repesent.(So its clear what in game action maps to what, and how/why.)
This means the basic rules cover all the game play in a well defined and comprehensive way.
(Unlike
40k which has over simplified basic rules ,and then has to use more exeptions that it has basic rules, to cover the game play

.)
Cover saves could be replaced with a
BS modification.
As we use a fixed 'target value' of 7 to subtract
BS from to get roll to hit.
BS 3 needs 4+ to hit.(7-3=4)
Why not allow this 'target value' to be modified?
-1 for large target.
+ 1 for small target.
+ 1 for firing over half max range.
+ 1 for target in /behind cover/obscured.
EG
So shooting at a small target,in cover , at over half range. 7 +1+1+1=10
BS 3 needs (10-3=7) 7+ to hit.
IF we want to differentiate between cover that just obscures view to the target, and cover that adds protection .
Eg tall grass , smoke, canvas sheeting etc, just make it harder to see /hit the target.
Bunkers, prepared defences etc,adds protection to target unit
Then 'hard cover' could reduces the strenght of the weapon hit.
(Rant warning...)
Why cant
40k use
BS modifiers? because
WH uses them.
Why cant
40k use movement stats? because
WH uses them.
Why can
40k use proportional allotment army composition?Becuase
WH uses them.
Etc ,etc,etc.....
All the best resolution methods and rules for the
WH game mechanics are used by
WHFB.
This leaves
40k with an unsuitable set of game mechanics, that can not use the best methods of implementations , because it 'has' to be different to
WHFB!
If
GW want
40k to be different to
WHFB , why not write a rule set specificaly for
40k game play?
(Rant ends.)
TTFN
Lanrak.