If anything the lesson MS would have learned from this venture is to NOT buy the Tomb Raider franchise. If they think they can entice the PS fanbase over to Xbox by making it a first party game they have little chance of suceeding. And it's pretty clear the Xbox TR fanbase is too small for it to succedd by itself. If they did bring it into the MS stable they'd have to make it a PC/Xbox exclusive to make it reasonably profitable, which kinda defeats the purpose of having something to entice people to buy Xbox.
Do Gears 4, then switch that team to a more TR/UC-esque new IP.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix
