I care more about the MUSIC than which followers I have available to me. I like to think I don't care about age when choosing a partner either, because I'm only at a milonga to dance.
That's definitely me. "What's playing?" is paramount, while age, appearance, weight, etc. don't influence my invitations. I'm there to dance to my favorite music. Everything else is secondary at best, irrelevant at worst. I have a certain degree of disgust for leaders who prowl for women to dance with as a substitute for a love life.
Priority always goes to dancers who will stay with me during the dance [...] Priority is CE
The two are one and the same for me. I seek the elusive "one body, four legs" experience. While I like the abrazo to "breathe," and elasticity is essential no matter how traditionally one dances, I don't like it when my partner suddenly flies away from me, regardless of why.
I will not ask a beginner to dance Milonga
I will, but not vals. My opinion is that vals is
by far the hardest of the three dances at the milonga. It isn't even a contest. Most anybody can dance to music in 4/4 time, and if you can do that, you can manage 2/4 time. Yes, there are other rhythmic modes present, but beginners can forget about those at first, and it'll still work.
However, 3/4 time is badly understood by even experienced tango dancers. At the milonga, I see people of 10, 20, and more years of experience dancing four measures of 3/4 as "three measures of four," with weird steps randomly sticking out the end. They also fail to advance and turn, and insert bizarre paradas, most often to correct for dancing in the wrong time. Beginners can't even do those things; so, I find them frustrating to dance vals with.
I actively try to dance with followers who have sat down a long time, or beginners about 30% of my dances at a milonga. I feel grateful to kinda followers who encouraged me to stay with Argentine Tango when I was a beginner, and try to return that energy to the community.
Same.
Unlike you, I favor friends over strangers. I can guarantee connection that way, plus I'm not guessing at who likes the orquesta, who can vals, etc. However, I make a point of inviting at least a few people who seem to be "outside" the evening, whether due to being beginners, tourists nobody knows, or simply bad at attracting invitations. I even broke my vals rule the other night, though I regret it because the follower had zero fluidity – she had fun, but I felt like I was dancing on sticky flypaper.