For the record, I voted wrong. Didn't read the question correctly and voted Yes when I meant No.
I believe exactly what Avaran/Adam has stated. With the ability to buy your way into more build (I've done it and surpassed my character of 10 years of just playing regular games within 3 of the various chapter pay-no-play and gobbie blankets for donation) that there will be a tipping point where the cost to do a minimal amount of damage will pale in comparison to avoid just about anything thrown at you multiple times. I can't count the number of times my rogue dodges have saved me at opportune times. And for a Hobling you just have to glue on some sideburns? I've worn them. They're barely more irritating than elf ears and about as troublesome as having to deal with the gemstones in the forehead (at least for me as my forehead likes to wrinkle quite a bit) And if you get professional grade sideburns, you only realize you have them if the glue begins to fail.
A suggestion, if the intent is to keep the Hobling nimble and keep on rising up in dodges, is why not give it an exponential type of purchase. Something like the first one is 10 build, second one is 20, third is 30, etc. It will still give them a bit of an edge (I haven't done all the calculations with the system to compare it to rogue purchases) but you'll eventually reach a point where that minimal amount of damage will be much cheaper than the dodge.
In fact, I probably would suggest such a progression change for any/all of the racial abilities that have an effect on combat. Else there will come a time to just buy more of them instead of progressing in other areas.