saw this in seq24 and on the MPC, they have like a grid, track mute mode as in the images shown below.


if the block is highlighted, that clip is playing, if it's not, it's not playing.
now i tried setting up something like this in ableton so i can have a big grid of clips that i could try like punching in and out etc. but two problems arise.
1) you can't have multiple clips per track playing, which makes this problematic, if you have a large number of clips and variations of patterns you want to play around with in a single song.
2) you can't mute individual clips can you? otherwise you have to manually stop them, and trigger another which gets a bit fiddly if i'm trying to use a midi controller to control all this.
any ideas?