Flexible scaling of Auto Reframe Sequence in Premiere Pro

So I have 15 short ads made for Google Performance Max (landscape 1200x628). Once approved they have to be reframed for TikTok (portrait 720x1280).

If I use Auto Reframe Sequence to convert GPM to TT using the (9x6) preset, then Premiere Pro sets the sequence size to 353x628 because it (understandably) looks at the shortest side of the landscape (628) to set the longest side of the portrait. In other words, PP does not allow you to upscale your sequence - it assumes that your footage is already at the optimal resolution and won't go any larger. In this case that is a wrong assumption - mine has all been shot in 4K and I have plenty of scaling room. 'Custom scale' doesn't work either - it always downscales, never preserving or upscaling.

In this situation, I now have to manually change the sequence settings of 15 ads to my required size and then manually upscale all the various clips, graphics, adjustment layers etc. 🙎 I might as well have done it manually.

So this isn't a bug report per se - but I can't be the only person who wants to specify a bespoke size that is larger in one or both axes for auto-reframing? Here I would suggest that Auto Reframe Sequence gives you the option of setting Scale (as it does now) and Pixel Dimensions. This would allow the user to request a higher dimension, if required, and PP should have a go at rescaling accordingly. This may mean that the crops are off, but they are easier to fix than scales.