I hope i'm not intruding here... My name is Jerry, I'm from Argentina (sorry about the bad spelling) and after reading the forum since a long time, I've decided to join because of this topic.
First of all I understand the opinion of Krouv. A lot of players hate numbers... Sometimes I found myself tired of maths in games, specially in games that take a while to play (like most Turn Strategy Games) But let me remind you that these games are based on numbers for a number of reasons.
Please, think about the origin of turn based strategy games and ask yourself about how they work. Actually, think about the project that started a while ago in the forum and you will find the answer a lot faster (I'm talking about the Elemental: Pen & Paper). The orgigin of TBSG are Board Games and Wargames. They are swarming with numbers, and even when a lot of them could be anoying to play because of the complexity of their systems, there is this other great number of them that are really simple to play, and they use numbers too. Why is that? Well, everyone knows the answer to 1+1, and also they know that 2 is bigger than 1. In other words, numbers let us compare, get to know how good are our little guys in the board (or on the screen) and also give us the idea of Control. We know how much, we know how many and speculate about those numbers. Its really hard to speculate about "good" and "very good" but in the end, "good" could be translated to 1 and "very good" to 2... you still have maths. Desguised, but they are still maths.
So, yes... if the system is anoyingly difficult, numbers can be awful. But, if the system is simple enough, numbers can be your biggest allys. This is a Strategy Game where you develop a serie of citys, a whole kingdom... using numbers instead of abilities let you know the income, the outcome, the spending and all that kind of things that make the whole "administration" easier.
On the second hand, abilites are really cool. I love when my civ can do something special that lets you "brake" the rules or go beyond. I think that everybody does, I mean, you are exceeding in something. But this should not be the replacement for numbers. If you get a few uses of a ability per game, then you can burn them too fast and then get frustrated and start a new game. If you save them for later and suddenly you win the game, you didn't get to use your abilities and... again, frustrated. Instead of placing limits, let the players get those abilites because of the numbers.
For example, your civ has a really big number in fighting, because that BIG number, you get a fighting ability (maybe you get to pick one from several choices) or a Research ability if your civ is very good at that. And that ability can recharge itself after several turns. In that way you can still use numbers, get abilities and by recharging them every once in a while, you are not placing limits to the player.
Well, thats my opinion, and I hope is well taken. Remember, abilities are great, but numbers can be great too if they not become repetitive and complex. They just give us some sense of proportion and reference. Without them, we can't figure out the system, and we lose control.