I think Alonso will stick around, its clearly a good chassis given what he's able to do with in it even in the engine situation they're in. This year's car is a Peter Prodromou evolved 2014 design, next year will be Peter's first clean slate design for McLaren after his amazing success heading aero work at Red Bull under Newey. Honda seem to have reliability and heat rejection sorted out, and are aware of where the weaknesses are, in the compressor and ERS. Over winter when they get access to all those engine tokens I think they'll make a massive improvement on both those aspects. Another interesting thing with the Honda is that in Singapore its trap speeds are consistently higher than Red Bull / Toro Rosso, which makes the Honda claims of a power advantage over Renault make sense. If it is just ERS and a compressor fix among some other enhancements they can definitely catch up given Honda's massive depth of talent, and in a better chassis next year it could be a genuine contender. Honda definitely don't want to go through this year again, and now that the problems are identified and data is plentiful they'll throw everything at it.