As said above, merging the 2 features is what breeders want to achieve, but as you can guess since there's no "perfect" Bengal yet is that it's a long work and not done with one breeding .

When you cross "perfect type, poor coat" x "perfect coat, poor type", you can as well get "poor type, poor coat" as "perfect type, perfect coat", and of course all in between...

And what you'll get more often is something in between because genes mix up !

Then the hard work is to select the best potential kitten to become a breeder (let's say, good head but could be longer and could have a better tail, nice rosettes but poor contrast) and select a good partner that "could" balance for the faults, choose the offspring that's the best and continue working on the breed and what you think it should look like...

And as said above, as that's quite personnal, that's why you've got many different types today . Some breeders have concentrated on coats and have stunning coats, others more on type and have achieved great looking bengals with small round ears and short, puffy tails, others still have great head shapes but ears aren't so nice...

I don't think one day we'll have a "perfect" Bengal because it will continue to evoluate toward what each think is best .

Just look at siamese, they're more and more "extreme" typed ! (big nearly bat like ears, very long and lean body and so on).