Every Guild has to put in the effort to get their people geared, and get the class knowledge to do enough damage on the crystal to get their %.
Also one thing you all are assuming is that "people that hit one or two times on the crystal" will get their %. When you get out a system, that rewards guild diversity more than mass-guilds, you will not fight against unprepared people, you will need to go up against other fully geared people.
You all just assume that it will be like the current system, where you have just 2 Guilds, however you will go against 5-10 Guilds, all geared, all with a strategy, but maybe not the manpower to go for the cap on multiple crystal, or they will lose out on other crystals.
Also you are talking about strategy? Do you mean your strategy of recruting so many people into one guild that you just outnumber the other guild with so many people that they have no chance of winning? Then the other guild has to pump their member numbers to outnumber you and then you quit the game because it's unfair when others use the same "strategy" as you?