We shipped this as part of our December release of Power BI Desktop! Make sure to download the latest version to try it out and read the blog for more information: https://powerbi.microsoft.com/en-us/blog/power-bi-desktop-december-2018-feature-summary/#smartGuides
Just like PowerPoint, either you can enter fixed chart size or align with already existing chart. The line indicator is so helpful. Plus PowerPoint indicates the center/middle too. Must haves.
Really a must have - about every other BI-tool includes some kind of alignment. The PowerPoint like SmartGuides would be a massive unique selling point, because no other tool provides anything comparabale in this quality!
You know in Powerpoint when you are moving a picture around, and an assisting dashed line pops up when you cross the centre line of another visual (text box or another picture). It would be great to have this in PowerBI. Will save time when aligning visuals.