(Easily that is, yes I know there's the Motion Graph, but that is really not ready for pro use)
The level of ease for Ease In, Ease Out, Ease In/Out key frames is fixed at a set level currently. Not good for pro use.
In After Effects I'd simply adjust velocity influence on the keyframe:

Or if required I make an adjustment in the graph editor, but when you're working quick - graph editors are not the best solution. You just want to tweak the influence of the ease, from a liner to an extreme level. AE's method of influence in a pop up window is ok... but slow in terms of UX. But at least it's there!
We need to adjust easing in Moho. Otherwise.. well currently all animation I've seen coming from Moho has a certain feel, just isn't looking pro.
And while it's possible to fine tune things by simply adding in more keyframes, you get a change request from a client and it's a nightmare...
How about a little slider on the keyframe property window to adjust the level of ease. From 0 = linear to 100 very extreme ease?

Or you could get fancy and have a little graph output to show the easing.
That would take Moho from a hobby toy to a pro application imho. Please Please add this feature!