Hi Vikram
I think you have misunderstood what the Cisco Support Community is for.
If you were to propose a topology, one of the members would probably advise on any improvements you could make but we are not here to design your network for you.
There are Network Architects out there who you could contract in to look at your network and propose where upgrades and changes are needed but these will cost money to employ.
If it was as easy as posting on the support community for someone to design your network, there would not be much money in the networking field :)
Thanks