I'd like something to stop you from starting a round solo, as after you start solo, you cant fix that. Really sucked when Bruce was at round 3 of Nightmare. Also, you get no squids when solo afaik.
2nd thing, I would love to get a notification of when I get squids from someone else using my gladiators. If the notification also added who used my glad, that would be amaze-balls. there is a cool feeling of comradery in chat from people just saying stuff like "Cheers for letting Siam help me. Enjoy the 100 squids" and having stuff in PM's would add tot hat I think. also it would just be cool :P (on a competitive note, it would also let you work out what alliances are the most beneficial for your squid earning....)