@Keith said in S-TM:

If there was two candidates supported by the largest bloc of about 40% of the voters they would still fight with eachother.

Yes, but they would still both be supported by that 40% because they both don't want to do things that make them lose that block.
Positive the fact that they try to have the block bigger and bigger, but if the block is for example "Republican", it will remain "Republican" (as well as the 2 candidates who then end up in the automatic runoff).

Also, falling back to score is not something I would view as a problem

The problem is that if you end up in Score Voting then you might as well use Score Voting from the start, which is simpler (but has its downsides).