keep it
(the web client)
.NET client works fine. I hated the .NET client (as a linux user of 20 years) back when I first started using ESX over a decade ago, but this was more of a case of "be careful what you wish for", when the "improved" web client actually seems to be much worse than the existing thick client.
Maybe by the time I do another major upgrade in vsphere (thinking 2018) the web client might be usable.
Till then I use the .NET client on a XenApp (fundamentals) server.