I'm assuming that the tv appearances are for the $ and not the 'we're musicians' profile. I guess it's all good in that it does maintain their presence in the UK media, albeit as bouncy clowns, but hey.
Are they really 'touring' w/ the Face of Ireland thingy? That doesn't sound very auspicious.
The Mac Music Tour looks legit... it would probably be good to participate, if asked. At least it's about music.
I guess the twins need to decide whether they are fish or fowl... it looks to me like they're somewhere in between right now... which usually doesn't work out very well.
To expand their fan base, J&E are going to have to have a hit. That's probably not going to happen in the Irish and UK markets due to their brand. I would seriously recommend they move to the States and try to get something going here. I know that's scary... but it's better to go all-in and miss than sit around in a small country waiting for the world to come to you.
Another good thing about moving to the States, LA or Nashville for example, is that you're surrounded by very talented artists who are constantly performing in small venues... you can get a lot of ideas from these artists. Just going to quality art exhibitions is a great way to get ideas.
It seems the Irish music scene is controlled by a handful of people who can pick & choose who's in and who's out. I suggest leaving that environment... J&E can always come back if things don't work out for them elsewhere... but at least they tried.