In the event of united Ireland could DUP attract a significant vote in the Republic / 26 Counties ?

Correct. In Francie Brady's Sinn Fein Ireland sometimes the mast slips, and it is quite clear how Protestants would be viewed in a U.I., especially if they did not keep their heads low.

Quote "because they're Protestants and nothing more - they cannot be nationalists and loyal to the Republic and the concept of republicanism."

Imagine if someone in England wrote about Catholics there that they are Catholics and nothing more, and that they could not be loyal to Britain?

Despicable stuff from Gerry Brady and the SF camp. Same as how some Republicans think that if you are not Catholic you cannot really be Irish, or if you are not Republican you are not really Irish.

???

In the event of united Ireland could DUP attract a significant vote in the Republic / 26 Counties

What would the union in 'Unionist' represent? The DUP can only exist in a place where they want Union with someone

Well, it'll be a signficant adjustment. And I think it could involve a high degree of realignment.

The current pattern of multiple unionist parties, with relatively frequent splits and the formation of new parties that mostly go nowhere, was set at a time when unionism was the dominant political position in NI. Obviously, it wouldn't be the dominant political position in a United Ireland, so a diversity of squabbling and splitting unionist parties will be a luxury that can no longer be afforded. Plus, I think to succeed and endure a unionist party is going to have to reimagine itself not so much as a unionist party but as a party that represents the interests of British people in Ireland.

All of which means that, in a united Ireland, there might not be a DUP. Or, the DUP might survive as an entity but might not be the dominant unionist (or British) party, or the one which is most successful at attracting the votes of British-identifying people in the former 26 counties.

In fact, the less like the DUP a unionist party in a united Ireland is, the more successful it will be in picking up votes from Briti-identifying people in the former 26 counties.

33.7% is phenomenal without a plan for a UI.
Especially when disillusionment has plainly set in within Unionism, now no longer the majority view.

There is an interesting scenario developing IMO. Leo Varadkar's input being at the centre of it.

I have said before there was a reticence within the FF and FG political parties of being seen to plan for a UI because it would play into SF hands. I.E. Unless they can be seen as the frontrunners they are not interested.

If SF are knocked back to current polling levels in an actual GE might we see FF FG try to wrest the initiative on achieving a UI from them.
FF are keen for a foothold in the north, if SF fall back, they won't get a better opportunity.

They've stolen a march on the 'Republican Party' no doubt.
Will be interesting to see if there is a response.

It isn't a huge achievement as an Irish person to succeed in the first of your points, I agree with your second point but I doubt FG voters would and your third is pointless as he seems to wants to interfere and will be given a platform.

Key figure is the Don't Knows.
Those who are waiting to be persuaded and for a plan. Which is just another way of saying the positions will remain stagnant until such time as there is a map of the future.

You need to know how much of the proUK is soft support.
We know it is falling and is now not majority support anymore, how much further would that fall if a plan is produced.

We also know, and you have been told multiple times, SF don't own the concept, now conclusively proved by former leader of FG's intervention, Labour's recent contribution and cross party willingness to discuss the concept in the north.

We don't know how much of it is soft support.
We know it is now below 50%

We don't know how much of it is persuadable by a plan.

Until a plan is produced we simply don't know a lot.

And you won't see movement of much significance until there is a plan.

It is only an opinion that support for the Union is hard support. You don't actually know.

Produce the plan and then poll, that is the only fair test.

I think Varadkar has spotted the political capital to be made and unencumbered by party considerations has moved into the space.

I think he took his lead from the fall in SF support and that won't be lost in the backrooms of FG and FF who have been looking for ways to take the initiative on a UI without bolstering SF.

If SF's vote decline becomes a trend you will see a Plan.

If you want to put your head in the sand and pretend Unity is only being considered by SF then work away. The All Party Dáil committee are looking at it, The Arrins Project is and the Shared Island unit is too. Labour want it to be a key plank of what they offer too. Not to mention those in the Ireland's Future and in the UK etc. And last but not least those in the Irish government presently.
If Varadkar isn't seeking political capital, what is he after? He doesn't need to be in FG or even government to gain politically from it. Who knows what he has his eyes on.

Maybe.