manual improvement of alignment / sparce point cloud

I’m not giving up!

I realize the setting “max repro error” ican be used to influence the results but that is too much trial and error and it often results in component split.
From trying around a bit I got the feeling that the setting does not influence feature detection but is essentially a filter after that step.
Is that correct?
So should it not be possible to incorporate some filter for the tie points after initial alignment?