Personally, I'd like to see tuning in the Dailies... most cars have way too much understeer stock, and even if you can't tune yourself, there will be decent tunes available on here in no time at all (there will also be loads of **** tunes as well

)
However...
It won't make any difference to which cars are fastest - the fastest cars will benefit just as much from tuning as the slowest cars.
It won't allow DRB drivers to compete with Aliens; The fundamental limit to how fast you can go is how much rotation a car has - the more it rotates, the faster you get to the apex and the faster your exit. And the more skilled the driver, the more rotation they can handle, and the gap will to the rest of the field will simply increase disproportionately.
Why should I have to change my driving style when half of these tunes are horrible and don’t help it in any way, shape, or form?
Do you think a pro driver would use the same techniques in every car they drive? You have to adapt your approach to suit the cars characteristics.
Despite the differences in how the cars handle, and how quick each one is,
@Tidgney BOP testing shows the grp3 cars are all pretty closely matched if you have the skill to drive them.