uh... with Layers you couldn't even scroll or manipulate the data with that many takes. I hated that and the rebuild layers option made things even crazier. I'd say looking at that pic just do a Save As to get back to where you are if need be and drag the non overlapping clips into a single lane and delete the empty ones. What's going on there anyway? That's all over the place. Alternatively select all the non overlapping clips and Bounce to clips. It's not gonna make the thing blow up and if it does that's what the Save As is for. Another option would be to drag the actual take lanes in the left hand section of the track view like you would with a track so they appear how you want. Seriously I'd listen back to all that, see what I want to keep, make notes, clone the track and anything that overlaps stays in the second track while the rest gets deleted. It looks like you've got multiple parts in the same track. Overlapping material that you intend to keep in your project should be on a separate track.
IDK... that's just a mess. I'd freak out if I let a track get that crazy. Sorry... I don't mean to be harsh but this is a workflow problem... and I'm a little drunk. Wheeee!
Seriously though. Drag the entire take lanes so they show up sequentially on the timeline, if they overlap and you aren't sure which take you want to use for that track those takes go in the lanes directly above/below each other. Any takes that are meant to be a different part go in a new track (don't use two different parts in the same track at the same time). Do your editing and if you want to only deal with one take lane bounce to clips. It's a different workflow for sure but layers were a bloody nightmare compare to what you can do with lanes.
I have no idea if that made any sense to you but man... lookign at that I want to reach into your project and clean that up. What a mess. lol