いいんだけど

it would be good, but

→ 良い
phrase Uncommon #9,675
it would be good, but Often softens a statement or leaves an unspoken qualification; depending on context, it can express a hope or wish.
JA: それならいいんだけど。
EN: That would be fine, though.

ついでに今夜泊まる家を連れて来てくれるといいんだけどね

I wish you’d bring along a house for me to stay in tonight while you’re at it.

— ハウルの動く城 (2004)

本当だったらいいんだけど。

I wish it were true.

それでもいいんだけど、こういうのはどうかしら?

That works too, but what do you think of something like this?

バーベキューするのはいいんだけどさ、煙が目にしみるのが嫌なんだ。

I don't mind barbecuing, but I hate it when the smoke gets in my eyes.

いいんだけど…

I don't mind, but…

— サイコ (1960)

トムがまた余計なこと言わなければいいんだけど。

I just hope Tom doesn't say something he shouldn't again.