I prefer numbers. Why not give the weak ones a chance? Why not break it into groups - either with numbers or locations?
With the above it goes from everyone jumping on each other to a much quieter pile...
I remember a VK6 working a pretty big group and someone keep saying "split.. split".. he came back.. "I'm not going to run split.. if you would shut up follow what I tell you, we'll all be happy.." or something like that... he was able to pull them out quickly right on frequency.
No one said it was CW only. Who said the DX was going to stick around for a few days? I didn't read that.
By the numbers just plain SUCKS. Instead of spending 5 minutes in a pileup I have to spend 30 and if I don't get through when they are done with my number I have to wait a whole cycle again.
The best DXpeditions I have heard and worked did not go by the numbers at all. Even the huge pileups at 7O6T didn't require going by the numbers, yet they worked a lot of people, a lot of whom didn't have big beams.
If you are a weak station, you have several options. One of which is to wait a few days. After a few days most DXpeditions are begging because all the big guns have them in the log. People like W2IRT will have them on every band, every mode by then and won't need to crowd you out of the pileup. So you get your chance for a contact.
Another is to learn a technique that gets you noticed. I did a lot of mobile operating. Not exactly a big gun. So I learned to call near the end of when people were calling. Delayed my DVK or CW keyer until the last.
Another is to have a long callsign. My XYL with her call KC2OYY always gets through on CW even with 100w. (try that in your head dahdidah dahdidahdit dididahdahdah dahdahdah dahdidahdah dahdidahdah).
Another is to shape your audio to get noticed.
And don't really expect that an indoor antenna with 5w is going to get you to the top of the heap. It will take patience and more patience.