I wasn't so much thinking about MPT having sampler capability. Imo a step too far for the moment.
As far as I'm concerned, this is about enhancements of the sample tab.
Having cue points beside the loop points would be nice. Not only for finding beats in a complete bar, but also with 'single' samples.
Of course one can make a cue in a sample by using the offset-effect code. But that's based on ticks-value.