i guess you could split my installation into 4 areas of input - pushbutton / switches, ipad and iphone, sensors, and IR
any switch capable of closing a 24v contact can be used for digital input. so the switch you have on your wall now is probably compatible. the miniserver works by recognizing pulses of closed / open contact, so pushbuttons are preferred. examples of pushbuttons i have tested
clipsal impress, rrp around $14
pdl pushbutton, about the same price per module
im using a couple of these in the bathroom - ip68 pushbuttons, $5-10 each. one in the shower for music control
there are plenty of options. the idea is to reduce inputs on the wall switch - so instead of having 4 and 6 gangs each for individual functions, you can program a button to recognize double-clicks, triple clicks, push and hold, or any combination of each. these can be assigned to different functions. for example single push for lights on / off, double click for music on, push and hold for dimming.
sensors are similar, as long as they have a NO / NC relay output capable of 24v they can be used. im using a couple of these paradox ceiling sensors from dx.com, $10 maybe
again there is lots of options here
switches and sensors are wired back to the inputs on the miniserver with cat 5.
the IR extension module can be used to consolidate IR commands. for example you can program the IR signal from the nice looking apple remote to control lights, blinds, a combination of functions. just a matter of piecing the program blocks together in the config
video distro - i have no idea about really, but im sure you can work a third party into Loxone, in a similar way that they support Casatunes for multi-room audio
the ipad wallmount that Loxone produce is really nice, i have one in the kitchen. the ipad is one of the best looking and best functioning touch interfaces around, of course that is what you want mounted on the wall, not some big-bezzled beast that cost 4 times the price and lags out when you operate it