Say you're given five years and near endless resources (respective to your country and other sports in your country) to improve your cricket team and either solidify their place as a Top 3 side or get them into position as a Top 3 side, what do you do?
For me, New Zealand cricket - I campaign heavily for one or two New Zealand cricket teams to enter the Australian first class competition - perhaps a North Island and South Island team - and invest heavily in the partnership to make this possible. I point to the success of the Breakers, the Phoenix and the Warriors in Australian franchise sport to show the possibilities, especially with T20 competition and perhaps even allow the Aussies to have more say in how we vote on the ICC for the opportunity.
I establish a rule that NZ will play at least ten test matches per year, every year. Preferably 12 (4 full series of 3 test matches a piece) to go with the diet of one day and T20 cricket and ensure that this is part of the conditon when negotiating with other test sides, I'd be happy to book consistent return matches with sides like Pakistan (in Dubai), West Indies, Bangladesh and other sides who do not get to play as much test cricket as the big four (Ind, RSA, Aus, Eng).
I campaign heavily for top class NZ test talent to play in the first class competition in England and potentially South Africa to expose them to different conditions and keep them batting year round (bowlers, not so much)
I search the country for tall (6'3+) bowlers who have some natural element of pace and then put them through specialised training camps to increase it, those that make the next grade, keep training them.
I put a particular benchmark of first class statistics on any selection to the main team of NZ - i.e you must have scored at least 5 first class centuries, have an average in excess of 35 in the last 2 years and show similar form for NZ A or the joint team in the Aussie competition.