Wouldn't say its worth the upgrade.. the reward structure is the same + you would have to pay annual and joining fees(you get almost all joining fees back) whereas wealth cc is ltf.
There are certain issues also to see like the mcc in case in rent or other transactions you will be charged. This is a pain because in other countries they use pos under different Merchant categories and in there countries no such nonsense exclusion of mcc codes or rent surcharge etc. But when we Indians go for forex spends if such surcharge or rewards are not given then no point at all because there is nothing like 0 forex eyewash to customer.