Gee, I don't know...
All those things you listed are exactly why I love the 808 over all the other sp's... the lit pads is a specific feature I wish the other sp's had actually. That and the way the hold-button works on the 808 - one of its best features for live playing, sadly missing on other machines.
None of the other sp's fit your needs as you describe them, though I've found they work great together with the 808 (I don't feel any particular need to 'modernise' myself

)
My son has a Novation Launchpad midi controller. It can light up ... I havn't spent much time with it, but I *think* you need to midi-assign the lights to the pads (not like they light up automatically when a sample is assigned to that pad... it's just a midi controller, afterall). But anyways, between a Launchpad and a Launchpad Control you've got the bits you describe anyway, driving presumably Ableton Live.
I'm absolutely fascinated by Daedalus' live performances on monome... have you seen any clips of that?