I think my personal record was close to 100 sats, but other than making it impossible to see anything in the mapview with the connections activated, it seemed to work fine. That was back in 0.23, but I don't see why it shouldn't work anymore. It brings up an interesting point though... should all satellites really connect to all other satellites, all the time? I'd like it better (and it would be more realistic), if the number of connections was somehow limited. I mean, the GPS satellites talk to their ground stations and maybe other GPS sats, but not with earth observation satellites, for example. Maybe if you could limit the amount of connections for omni-antennas, or make it so that you would have to set a specific frequency for each antenna that can then only connect with other antennas on that frequency... Anyway, is there an ETA for a 0.90-compatible version yet, so I can play KSP again?