I've been looking around for some female DC barrel jacks that can take around 12V and 10A dc, but all of the ones I find are rated to 4-5A at the most. Most boards don't have a built in female DC jack for power input, and those that do don't have software settable driver current (or at least those that i've seen) so if anyone has any suggestions on that front I'm interested too.
I've seen some 12v 10a laptop charger style power bricks with male barrel jacks, so I'm assume there is a corresponding female plug that can take that amperage. Some of the Mks boards and the printrboard have female barrel jacks on the board for power.
The power pole connectors stack up too. You can make multipole connectors of any size. The contacts are spring loaded and have wiping action that cleans the contacts when they make and break. Not to mention they are rated for 600V and are available in ratings to 600 amps for those of you powering your printer from a fork truck battery!