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Ok let me try to make things clear.
The point is, in LRT with the holy grail workflow you have these jumps in exposure (everytime the settings are changed) marked as 2 and 3 star keyframes. I'd like to have as less of these jumps as possible because I made the experience that it's better to control the brightness difference by hand between those, the auto keyframe wizard does not do the best job everytime.
In order to do that I like to control a few things:

First, being in control of the "jump size". The ISO jumps in aettr are always fullstops (100, 200, 400...) whereas the shutter jumps are less than 1/3 stop (1/200th sec, 1/180th sec, 1/160th sec ...) control over that would be nice to reduce the amount of jumps!

Second, I want to control the direction (sunset, sunrise or automatic[for scenes that get darker first and brighter afterwards or vice versa]) to make sure that i don't get unnecessary jumps.

And third (most likely the most difficult feature to implement in comparison the the first two) I don't want aettr to make exposure changes based on a single image.
Let's say im capturing a scene at the water and in one single frame (30s interval i.e.) there is a white boat in the middle of my frame. This is going to lower the shutterspeed (or ISO) for the next frame because aettr makes decisions based on one image. The pity is that this doens't help me at all because there is no boat in the next frame. Let's assume im doing a sunset timelapse and I forced the program to behave this way (point two, exposure adaptions in only one direction) it can't go brighter again, because I didn't wanted unnecessary exposure jumps in the first place (this is where the third point is important to make the second one work well).
A good way to make this work would be letting aettr making decisions based on a couple of frames (i.e. 2,3,4,5) using an average instead of just one image.

Thanks for your input. I've read a lot of threads here and there regarding this issue and I'm not perfectly satisfied. Yet.

First: I'm not the only one who misses out that kind of feature. I wrote to the guy I mentiond at the very first sentence of my initial post. He actually makes spectacular timelapse videos and he told me that he is using a 4 or 5 year !!! old ML version on his 5DIII just because he can't miss out this feature.

I know a lot of you are happy with ETTR + post deflicker and the Bridge script. For me theres only one legitimate workflow and that happens to be LRT holy grail workflow.
I don't see the the need of having my frames being perfectly "exposed to the right". With todays RAW capabilities I'd rather have less jumps in exposure settings and if possible just in one direction (longer shutter/higher ISO for sunset, opposite for sunrise).

Obviously I tried to download an old version of ML for my 60D to get this old feature, guess what they're gone    

I've saw a Video of a 5DIII which had a "Auto Exporamp" menupoint build right into the Intervalometer submenu. This is really awesome and I only read good about this function

The only thing I could find on my 60D (newest nightly installed) was the Auto exposure and the ettr modules. Is any of these capable of doing the job?

It's important that the exposure adaption just goes in one direction, either sunrise (getting brighter) or sunset (getting darker) and that there are as less as possible changes, cause every "jump" in exposure settings needs to be determined and controlled in post production.

A talented developer created an app named qDslrDashboard, which does exactly this. Having this build into ML would be awesome.

In a nutshell this app does control the exposure while timelapsing with a reference value and a average value. Basically you take a shot and it measures the brightness (I don't know how this happens and what unit that is) and sets a reference which is under (in case of a sunset) the image brightness. Let's say the brightness of the first shot is 110 and the reference was automatically set to 100. If the brightness falls under the reference the exposure settings will change in order to get a correct exposed image.

The point where this is different to other auto exposure possibilities i.e. aperture priority mode is that not the last frame but an average of a couple of frames are considered in relation to the reference. In case a bird is directly in front of your lens in one frame the exposure settings won't change (i guess the ettr and the autoexpo module would?).


In qDslrDashboard you can set:
-slowest shutter speed
-max ISO
-Direction (sunset / sunrise)
-adapting the reference
-increment steps (1/3, 1/2 or 1 EV)

When it's getting darker the shutter speed will constantly increase until the slowest shutter speed is set. After that the ISO will get changed. I'd also wish you could set that the ISO will be raised before the shutter speed and best would be to do it altering, like ISO raise, shutter speed raise, ISO raise and so on.

HUGE appreciation to any of you ML devs!

Would be nice to hear from you. Regards

PS: If theres any I could do, I'd like to collaborate!