And this is about the silliest thing anyone could say!
no it isnt, smileys aside chilli nailed it there.
with fixed caps, your scenario would work fine - LWO is full, call your squaddies into LWB and start a fight.
with dynamic caps, LWO is capped, call your squaddies into LWB. as they leave LWO it goes under the dynamic cap threshold and now LWB is capped and LWO has slots. Now half your squaddies are in LWB, the other half are in the lobby and cant get into LWB. so ... call them into LWO. same thing happens all over again.
we've tried doing what you suggested in the past, and the result was what I described above. end result was we just wasted 30-40mins dicking around logging into one arena or the other and the squad was still split between the 2 arenas just like when we started...
the point is that the dynamic caps make any kind of planning like this impossible.