My guess would be no, you shouldn’t buy it.
Firstly not only is the box big, but more importantly it requires a lot of space to actually play a game. The 3 player game I had with La Luna Verde just about was ok on a 4foot square table.
This leads to the next point, La Luna Verde wasn’t wowed by it and you and he have a fair match up in tastes.
With your enthusiasm for mastery and repeated plays I wonder if this would satisfy. The map variety is there but I wonder if the single minded focus on getting up to shares would provide enough variety for you to sink your teeth in to. It lacks FCM’s branches of end game states to build for in my limited experience. It doesn’t generate the instinctive play you need in Innovation or FCM of focussing through the chaos.
It has a ponderous slow first half which is maybe too much of the game.
Also it’s not great at 2. It becomes so zero sum that it ends unsatisfyingly too soon often. Neither player much developed but one in a better position so without the uncertainty it’s boring from then on. So it often ends in the unfun first half and isn’t Go level of conceding and easily starting again. (Not that I’ve played Go, but I can surmise hopefully accurately enough)
It’s not without it’s merits, particularly the end of the game can be tense and really running your logistics network to full capacity is satisfying. Plus the sheer joy of playing a heavy game and drawing on the board is superb.
That being said in the event of fire, or whatever disaster, it’s not a game I’d look to replace in my collection. It’s not anywhere near Food Chain or Indonesia for me and isn’t as week night friendly as Great Zimbabwe.