Regexes for route rules

I know SPA's are not ideal for SEO, but having regexes for route rules would go a long way. It would enable me to easily define routes that should result in a 404 instead of a 200 rewrite to index.html

Example of what i would like to do:
`{
"routes": [
{
"route": "/",
"rewrite": "/index.html"
},
{
"route": "/well-known-route/*",
"rewrite": "/index.html"
},
{
"route": "/another-well-known-route/*",
"rewrite": "/index.html"
}
]
}`

Everything else that does not exist in the context of my angular application would get a proper 404 response, and google will not include it in the index.

If you wonder what other url's would be indexed by google besides the routes of my application: just try putting a angular app online and you will see. For my latest project, i see google checking these url's:
- /tenies-online/2016.html
- /home/top/new-rock
- etc ....

I have no idea where these come from, but they are polluting the google index for my uri, and are hampering my SEO efforts.