We can still give it a try at least. A little test really. Besides, I would handle putting it all together and making sure it works. So if all that needs to be done is redrawn tile sets, that might not be much of a problem. But if the next entry was made in MV, and used the same tile sets as the others, that would makes things go by faster.
But still, it can't hurt to at least test out an MV port now can it? I'd handle putting it together, so you won't need to worry about that. And if you would want me to help with bringing the series to MV, I'd gladly do so. And even mobile!
So go on and think about trying a test run to see how it works out. To make sure that it's playable at least.