OK, I have been looking at the Axes, and with one glaring exception I do not think we have a problem with 80% general size, leaving the new 1H Axe models as is. While most twohanders are smaller than the four foot Danish axes, the War Axe at length 90 should represent those quite well. There should be a range of size also in two-handers.
The glaring exception is the double headed axe. Even at 80%, that thing is just monstrous, but if reduced much more than that it's not credible as a twohander. So my though was to reduce it to 60% size and make it the top of the line one-hander axe. This would of course necessitate a complete stat rework, but for just a few weapons I can do that.
It would look like this (still held as a 2-hander):

Also, there is not a logical progression in size and stats. The Fighting Axe and Axe are underpowered for their length and weight, compared to the shorter one-handers, and look too long for comfy 1H use. My take is that the new 1-handers should be nerfed a little bit (at least in RCM), the fighting axe made the smallest 2-hander, it just looks too long for single hand use.
The changed stats I had in mind were these (same for RCM and Vanilla unless stated otherwise);
1H War Axe; damage 28 (ie, unchanged in Vanilla)
1H Battle Axe; damage 29, (ie, unchanged in Vanilla)
(1H) Double Headed Axe (reduced to 60% of original), damage 32, speed 65(RCM) 75(Vanilla), length 55, weight 4.5, strength requirement 12
(2H) Fighting Axe, damage 32, strenght required 7, otherwise unchanged
(2H) Axe, damage 35, otherwise unchanged
Version 1.3 with the above changes is up!