This is great! I've liked all your works.
I love how you show the ETA for each square on mouseover, and also how you got it ticking down as the countdown changes.
I also appreciate the way the automation layer reassigns all the points from the booster when it's used, I hadn't even thought to try that myself.
This is probably not a simple request, but in case it is: could the time estimates be changed to include the booster running out? (That is, if a 4x booster is expiring in 4s but the square would finish in "5s" it would instead say 8s instead of calculating like the boosted speed would continue forever.)
Now to work on getting to the pink layer.