While they continue terminating subscribers on
https://www.firebrick.co.uk/fb6000/fb6202-lns/ they're in for bottlenecks.
Weaver's lines will be terminating on an FB6202 LNS and the mobile on a 6602 GGSN.
I presume 10G is on the way soon, though imagine it's being delayed by perfectionism and some OCD as you can deliver a 10G LNS using commodity hardware that fits into a 1 RU package and serves 10,000 subscribers happily, let alone using the 'bespoke' hardware in the FireBrick.
I do not think A&A have any interest in that segment of the market still. A VM running on a modern CPU with a decent NIC can route 10G with a single core taking most of the load. With loads of PPPoE tunnels to terminate that load can be more easily parallelised across multiple cores. Most of the extra load with PPPoE is encapsulation and of course the RAM requirements. RAM is cheap and modules are small.
A Lanner box the size of a cigar box, commodity hardware, can push a gigabit -
http://www.lannerinc.com/products/x86-network-appliances/desktop/Switches?
https://mikrotik.com/product/crs309_1g_8s_in - 160 Gbps non-blocking throughput via 8 SFP+ ports and will fit on your desk.
A&A do their own thing. Always have, always will.