OK, he did ask "why". And why indeed? Why would anyone in his right
want to start a team consisting entirely of Linemen
(There is that one blitzer of course, but...)
Here is why:
You can have up to 2 throwers, 2 catchers (or was that 4?) and 2 blitzers
on your High Elf team. This is 6 out of 16 players. Which leaves a demand
for 10 linemen.
Your position players, even new ones, will have no problem advancing.
Lion warrior can run fast and catch the ball. Any Dragon Warrior can do
largely the same while kicking butt in a reasonable fashion. A new Phoenix
warrior just has to lob the ball a few times.
By starting with so many linemen you are bound to get some SPPS on them.
You will have to rely on them for scoring, passing and fighting. And they
*will* get better at it. With the MVPs and occasional casualty, TD and
pass, your linemen will improve over time.
In the long run, you buy new specialised players, but by that time,
linemen have got their Block, Dodge, Diving Tackle, skill vital to the
well-being of your team.
Your SPPS will be more or less evenly distributed among your players,
which is desirable. Having two skills on twelve players (~150 SPPs) is
better than having four skills on two.