That is a seperate issue, which i have already addressed. This suggestion changes what they are fighting in, and the tactics around that. Not the size of fleets.
There is only real way to break up the larger fighting in eve, though through conversation in my alliance the point that this is eves marketing directive, should be mentioned.
in truth, there is only one real way of breaking up the massive fleets, its to remove the massive alliance/coalitions. Since players can ally out side of game (so to speak) the only real way of addressing this issue comes in hardcaping systems, which is exploitable in ways. So the only real solution is logistics, in which it becomes impossible to distinguish allies from enemies. The good news is this is easily fixed but requires a bit of work to really have a massive effect.
First, removing the ability for people to recognize others is simple, and is to be redone by changing the limit of allies and potentially enemies (blues and reds) on the alliance standings system. This is step one, turning the majority of people neutral.
Step two is to remove the ability to distinguish neutrals on the battlefield. This can be done by removing corporation and alliance from the overview. Any experienced pvper in nullsec, knows that often we work with neutrals. When we do this, we use these mechanics in the overview to distinguish who to shoot at and who not to.
If we do the above the result will be, say 5 blue alliances (which imo should be limited to 3) on overview, a few red, and mostly neuts.
from here the only work around from players involves incredibly complex (thus unlikely) teamwork, which basically in the end results in popping your own allied neuts, or a 1v1 situation. Yes, in ways multiple chain attacks can still be used, but the problem of blobbing is gone.
I should note, that i stronly believe that corporations should be capped at 250 players, and alliances at corporations limiting a coalition to a population of say 10k, which is a significant drop from what we have now (potentially unlimited).
lets not get side tracked with the blobbing in this thread, its not for that.