Are you deaf? All they have to do is employ minfee.
Lol, this is how it is working now. If you want to
do transaction add you transaction into block then increase fee.
Edit:
I do not understand why do we need to increase block size if we want to "employ minfee".
Let's try to "employ minfee" and if they raise too high then we will increase block size to reduce them.
My gawd, that one is easy: We want a lot transactional capacity, to make bitcoin useful for many many people. It will clearly work for a few people with 1 MB, proof: it works now, but we want
many many-many many many many.