This has as much to do with design choices, honestly.
The flow is:
- Practice Mode
- Rival Presentation
- Character Presentation (Big Globe Screen)
- Match Start
- Match Result
- Character Presentation
- Practice Mode
Loading the Character Presentation screen takes time, why not load the level for the match and have a lightweight UI presentation with the Players' information instead? Especially for going back to Practice mode, it's a huge waste of time. I know it's less hype, but after the 100th time I'm immune to how cool the character presentation looks.
Another thing they could do is have the practice character immediately jump into the current level after your Match Result finishes. So you could resume training in the level you just finished your match on. This could be pretty difficult to do, but it would save a lot of time for the player.
Transitioning between matches in SFV is really terrible