5.56 would be a monumental, generational mistake. Good thing CZ is multi-caliber, however m-c rifles are a case of "ok for anything but good at nothing". Instead of a rifle competition/tender, the brass should be deciding about the caliber they want for the future. Then go from there. Besides the 7.62 NATO, 7.62x39, and 5.56x45 there are other calibers under research (6.0 or 6.5) that are solutions for the battlefield of tomorrow. Pak generals, as usual, seem to be fighting the last war.
I don't mind the delay. There is no generational break thru with regards to rifle/carbine technology - though there are a few ideas like the caseless 6.5mm. Just upgrade the g3s and get the sf a few modern rifles. Plan should be to get the SF specific examples. For the foreseeable future, the type 56-ii is just fine with a smattering of /aktypes/m4/aug/scar/sigs is a-ok. Money can be better spent on personal protectional, comms, el-ops etc.