I have a 4310 with 430FEL, 4in1 bucket, and a 48 BH... can't imagine being without either. My biggest current project is digging out (burrying) lots of rocks. The FEL even with the 4in1 wouldn't be able to do it but the BH makes it easy and fun. I either dig a deep hole next to the rock (depends on size) and role it into the hole then cover it up, or... I dig it out and transport it to a dump sight with the 4in1 also easy and fun! One word of caution when transporting a big rock in the 4in1... always go in reverse... sometimes those rascals come loose and fall out (i.e. after hitting one of those hidden bumps), if that happens going forward and the rock is large enough I can only imagine the damage you could do to the tractor if you don't stop in time... OUCH!
The only improvement I can think of is having a toothbar installed!