Please take a look at the below and all comments suggestions guidance will be so so much appreciated.
I will be working in the UK under tier 2 for 5 years in 2015. Recently I got offered a short term assignment in India from my current employer for 6 months.
I spoke to a immigration consultant and they said my chance to get ILR in 2015 is very slim

I'm still UK based, my employer is a UK company, I'm still on uk pay roll pay tax and NI as normal, my salary will go to my UK bank acc. However I'm not planning to keep my uk tenancy during this 6 months as I don't want to pay crazy rent and not living in it.
I take around 25 days (inc. weekends) a year on holiday abroad, so that will be 150 days in 5 years, this is part of my paid annual leave.
Is it true that my chance to get the ILR is very slim. I will take care of the 90 days rule by coming back and work in the UK office for 1 week so that my short term assignment of 6 months will be come 2 long trips of less than 90 days away from the UK each. And the employer will produce letter confirming the 6 months is business related, however to be honest, it's not business critical in terms of if I don't go the company will crash or something like that.
1) Please can you give me some advices and guidance. Is there anything I can do to still take the assignment but not totally jeopardise my chance of getting ILR in 2015 and have the clock reset due to this business assignment.
2) Is there anything else I should do in addition to come back to UK before it reaches the 90days rule to decrease the impact this assignment would have on damaging my chance of getting ILR?
Really hoping someone will help me on this matter. I really appreciate it.