8th edition infantry are better than 7th edition infantry. You also need less 8th edition infantry that you needed 7th edition infantry to do the same job. ie; hold, Thanks to steadfast you don't need 20+ infantry to generate the static res needed to not break from cav. Also in a basic 5 wide formation 8th edition infantry get 100% more attacks.
All this adds up to an increase in the cost of non-elite infantry, especially non-elite infantry with access to special rules such as (true) unbreakable or steadfast. Breaking from combat is a major deal in 8th with no half points, and no points for fleeing units, so any units that bypass or resist that are going to cost a lot. If however you aren't using the GW vp system I can see why you would feel units like flaggelents and greatswords are over costed though. Anyway an increase in the cost of basic infantry has been an 8th edition trend and it will likely continue.
What I'm forcasting is something like this,
Marauders 5 points, come with light armour, no marks, no great weapon option.
HE spearmen remain 9 points
Seagaurd come down to 11 points
Archers 10 points
DW warriors come with shields up to 8 points
Corsairs and Crossbowmen remain the same
Dwarf warrior, comes with heavy armour shield 11 points, replaces shield for 1 point for GW
Long beards get their own entry
I'm not sure brets or Wood elves even get a 8th edition book so I'm going to leave them out.
I can understand the frustration with having to play against 6 pt dark elf warriors and 5 point Great Weapon marauders, but in 8th edition the Empire army book is about right. Personally I feel if they were willing to continue the half point trend then free company could have been 5.5 points. However if they were 5 you'd never see spearmen as they would be better in every way. They however aren't as good as halberdiers, I do understand why the would err on the side of caution though, with spells like Mind Razor, and Flamming sword, 5 point free company would be a nightmare, think De warriors but with a flat +1 to hit, as opposed to ws4, and access to all 9 lores!