[Paid Software Announcement and Discussion] pixelk:
Permit me to details a bit more a few wishes, so that anybody can benefit from them (I won't go as far as saying that most of the timelapsers are Canonists, but I know a lot of them are indeed)

- exposure bracketing, in EV/Aperture and exposure time - you should be able to state a start, end and increment value.

EV Mode

: Camera computes the nominal EV, then in DSLR Controller (DC from now on) you set, for example, Start at -2EV, Stop at +1EV and increment of 1/3 EV. Then DC takes the -2EV shot, changes to -1,6EV, takes the picture, changes to -1,3EV, picture, -1EV, picture, -0,6EV, picture, -0,3EV, picture, nominal EV, picture, +0,3EV, picture, +0,6EV, picture, +1EV picture. A final beep could be usefull

Aperture Mode

: Camera computes the nominal aperture (say f/5,6), then in DC you set, for example Start at -2 f/stop, Stop at +1 f/stop, increment of 1/stop. (some lenses have different f/stops available) DC sends the command to stop down 2 times, takes a picture (at -2), sends a command to up the aperture once, tapkes a picture (at -2), up the aparture, picture (nominal f/stop), up the aperture (at +1). This should give 4 shots with aperture f/11, f/8, f/5,6, f/4 (those value may vary depending on the lense used, but you don't need to know the value, just send the "open more" or "open less" commands)

- Focus bracketing : take multiple picture with incremental focus change (again with start, stop and increment settings)

Set the start focus, end focus and increment (fine/medium/large) in DC, and then take as many shot as necessary between the start and end focus value, with the set increment in between. This will be very usefull to get the perfect focus in difficult situation (like in poorly lit scenes or astronomy)

- Memorize focus : to come back to a selected focus quickly

In DC, be able to memorize the focus position and have an option to come back to if afterwards (it may need start from the nearest or furthest focus availble on the lens). If I rememeber correctly Canon cameras don't report the focus distance and you may have to do this blindfolded, trusting the lens to go to the same focus given the same start point and inceremental focus changes.

- Download to phone (I know it's already on the list)

- Automated bulb mode : to be able to set the exposure time before hand

Like a manual exposure time. I want to expose for 5 minutes and 10 seconds, I set this value in DC, it then starts the bulb exposure and stops it 5 minutes and 10 seconds later

- Start / stop blub mode : start the bulb exposure with one press, stop it with a second press

Super usefull for long exposures in harsh environment, when you can't keep your finger on a button for, let's say, 10 minutes.

- Locked continuous trigger : in non-bulb modes, start taking pictures with one press, and stop with another (like pushing on the trigger continuously)

- Enhanced contrast liveview : would be very usefull for astronomy pictures

Boosting the liveview's image contrast by applying a constrast filer to it. I fear it will be very CPU intensive.

- Red filter (display everything in red shades) : again very usefull for astronomy

Same remark as the last wish (note that the liveview and the control buttons should be in shades of red)

This is only a wish-list, no show-stoppers here (as I already bought the beta and are very impressed with it).