Hi, Fran!
Thank you for your suggestion. Actualy we do some re-design of keyboard input now. And we already thought about giving players opportunity to bind form selection to 1, 2, 3, N - keys for faster access. But extending of forms count will make this approach uncomfortable (you will need very long fingers to reach 7-key). For now we decided to improve our radial menu for more comfortable usage. So stay tuned and wait for updates.