The hardware is capable (quad-core processor, 4GB Flash, 512MB RAM) and it does all the basic services you need (DHCP pool, Static IPs, VPNs, UPnP, port forwarding, etc.).
No reason why you can not use it to its full ability.

I only have 1 system deployed and it was a basic setup. So there might be issues with it choking when you throw to much at it (multi VPNs, etc.) but I don't remember anyone saying they have ran into limitations with it, outside of what it is listed to do.