I have a mojo hd, had it over a year now. Great bike – light for what it is, climbs well, descends brilliantly. Cant say that its good value for money though, it is hellishly expensive (but then so are all its comtemporaries). Rear suspension tough to get set up right, very critical to get exactly the right sag. Works well with a CCDB air shock, small bump compliance drastically improved over the stock fox rp23.
Other downsides – no ISCG tabs – but there is a mojo specific chain device available, but in keeping with the frame its v expensive.
Cant really see it being considered ‘out of date’, last year they switched to a 142 x 12mm rear axle, and direct mount front mech, the rest of it is pretty future proof as it was. There doesnt appear to be a replacement for it on the horizon from Ibis, they seem to be concentrating on getting their 29er ready.