What do you mean for "but there is potential for more extensive automation/testing in the future"?
I’m asking, because to answer you, depends in what your team are aiming for to test.
For example:
We use UFT ONE and Mobile Center, I’m making script's for emulators, browsers, Androids and IOS, pushing queries from the database etc etc...
UFT ONE have a lot to explore, and can do almost every functionality test, and also other kind of test.
Other thing to have in consideration is, look at your team and the skills they have. If you have low programming skills UFT ONE whit the VBscript have a lower curve to learn, since VBscript are easier to understand and get the logic.
If you go at UFT DEV, you can have a huge learning curve. Or you can have programmers that are testing something whit the wrong perspective.
So in the end you have to adjust at your needs, but think well about some questions.
Best luck.
Regards