if it's about Cardiff.. Sport, Entertainment, Transportation, Business, Development Projects, Leisure, Eating, Drinking, Nightlife, Shopping, Train Spotting! etc.. then we want it here!
That's a great idea considering it's currently a windswept, empty space. Even taking into account event use, there must be scope to have some features in the square. I'd hope the council would get behind any good designs that come out of this.
I've always wanted a statement fountain, can always be fenced in for rugby days etc. and it definitely needs more seating.