[FEATURE REQUEST] Customised RADIUS Attribute

I wanted to know if this would be possible.

So on the hotspot login form basically we post the username and password etc to the dnsname of the hotspot/login

I wanted to know if we could also post some EXTRA variables to it and then the mikrotik will send the along with the access-request

so login form currently looks like this

What I want to do is something like

Then on the access-request on login have the user-agent and redirct-URL being sent through so that I can do checks on them etc.

Is this possible to do?

I think the benifiet to doing something like that is that we can control things from radius side instead of relying on server-side code on the portal.