[GLB] Question about SA level combination and preparation for new units from JPN

pardon me if this was asked some where in a a guide some where and please point me in the right direction if so.

First question - I have Whis INT at UR and a Whis TEQ at UR, it appears I can combine the weaker INT version and raise the TEQ version SA by 1. is it worth it?

I also have a dokkan awaken Cooler final form and should i do the same thing if one day I pulled a natural Cooler final form SSR?

Second in thinking about this, Im beginning to think there are characters that potentially will be coming from JPN that we should start preparing for and would start collecting if not keeping the following units so we can raise the SA level of new units since they have the same name. The ones I Can spot easily so far are... as well as some already existed

-AGL Bardock star-cross fate from event (farmable) for Bardock AGL SSR -Golden Frieza (dokkan awaken version) for AGL Golden Frieza = Emperor SSR -AGL SS Goten (kid) SR for STR SS Goten (Kid) SSR -TEQ Beerus SR for STR Beerus SSR -Any regular Vegeta for INT Vegeta - projecting ability SSR -Any Goku for STR Goku - great shine SSR and PHY Goku - Entrusted hope SSR

just to name a few.