It seems to me that, for the target market, optional mounting ears would be desirable. Front ear mounting a heave piece of equipment is difficult from an engineering perspective since they tend to sag in the back. No idea how heavy this guy is, but I suspect it's pretty darned heavy with all the power conversion going on inside.
Optional mounting brackets have been a mainstay for data and telecom equipment for years. Most gear similar to Axiom's Amp form-factor ships with both ears and rubber feet. Install that which you need, throw the rest away. For some equipment, especially the heavy stuff, its an additional cost, which I don't really see as a downside if Axiom chose to do it that way.
Right now, the only rackmount option is to buy a shelf at, what, $100? Paying an extra $20 for Axiom to throw in some rackmount brackets is quite a deal.
