I hope Google are going to do continuing security updates for every enterprise release of Chrome for the next 10 years, LOL! At least limit the company browser to only internal apps (still not safe!). Perhaps they could de-feature the enterprise browser for better support&security? You would hope that using standards compliant web apps would make upgrading/testing less of an issue for corps.

Using ancient versions of IE to get work done was awful and in the current security environment, I don't think it's safe for a browser that's not in its own VM. Heck, you could use Chrome Remote Desktop!