The great Civ question:
Have much fun with Civ 1.
A good game true is Civ 2.
Best game easily is Civ 3.
One turn more, play Civ 4.
Still alive is Civ 5.
Get your kicks with Civ 6.
Gamer´s heaven in Civ 7 ?
Civ 7 be like:
Roads and railroads as in civ 1
Partisans, Economy and unit cap tied to city pop as in civ 2, plus the best complex tech tree.
Mixed armies and governments as in civ 3, plus building on mountains.
City centers as in Civ 4 (city walls give a buff to unit inside but no hp by itself)
Realistic graphic as in civ 5, plus naval combat.
Ley lines, Heroes, workers sacrifice, but may need to mantain a little more automatic, or help build roads, etc. as in civ 6
Civ 7: Squash the water, bigger rivers, early armies, no city hp, 9-10 altitude layers, sequoia giants, giant wales, roaming livestock for nomad gameplay...and less cards gameplay... maybe a little sim like where you can name citizens and have mini missions, like driving a car like simcity2000, move citizens around cities, industrial districts, hospitals strikes... would be super fun to actually get inside a 3d view at ground level...
the evolution of 4x, a mix of 4x and Rts. Civ 7 can squash HK!!