@julia Well, keep in mind that players will leave, join, go to spectator or switch teams by themselves, so i think chances that you keep getting switched by already sparse autobalance actions are relatively low. For the balance to kick in and switch the same player, the teams would also have to be repeatedly unbalanced (two players difference or more) on opposite sides in one game, which is really rare.
Doing it like this still makes the most sense because other players that have done relatively much more for the team by scoring and fragging shouldn't just be switched out all of a sudden. Nevertheless i think just experimenting around with it will show if there is room for improvement, and your feedback during testing will be important

probably true

There was some demand for the auto-balance thing so here's my pastabulous mod, freshly off the stove:

https://github.com/benzomatic/spaghettimod-extra/blob/master/script/std/autobalance.lua

How it works: it compares team player counts periodically and once it detects uneven teams, will carefully (randomly) choose the most distinguished of Pastafarians (players with least frags) that will be gently put into a hand-selected (the other) team - but only after they were fragged and are dead anyways. I think that's a pretty soft approach and allows for a seamless teamswitching experience.

If this takes too long, nobody gets fragged or the teams are too unbalanced, some bottom players may be "balasagned" - which just means that they're switched into the other team but without suiciding, still keeping them alive and well.
Flagholders will never be balanced, and neither will top fraggers/flag scorers, so this way you can avoid having to join the other side during the dark ages of unbalance.

I did some testing beforehand but should it be implemented, i would appreciate any feedback or thoughts on where or what to improve

@julia FAKE NEWS! I'm honored to be switched by you.. if you do it while i'm dead

@miu brought up a good point! Sometimes the player balance isn't really important, because in order to have an even game, skill balance is the deciding factor. In other words, you could easily automate switching bottom players to change the game from 10-16 to 13-13, but that wont matter if the other team is simply much better.
All it would do is attack the symptom of the problem which is players complaining about an unbalanced player count, while it probably wouldn't solve anything.

NoobLounge had an acceptable way to deal with the "root cause"; it implemented an advanced points system to determine the stronger and weaker players and shuffle teams in the beginning, or when there was significant skill unbalance. That would be a project of larger dimension and require some time.
Lastly, not to be too much of a party pooper here, but i just have to point out that (unlimited) rugby mode contributed by far the most to situations where an only slightly better team utterly dominates certain maps, as it just eases your control and scoring requires less effort but.. we had this discussion
This caveat might not be a bad thing for some, but if rugby mode is beloved, its impact on unbalanced games is definitely a side effect to be considered.