What is ahead for all parties in the Dáil?

The Fine Gael core vote is reasonably solid while those who defected from Fine Fáil were prepared to continue voting them while holding their noses.
Sinn Féin has hoovered up orphaned Fianna Fáil voters who have sworn come hell or high water to never vote for FF again as well as disaffected Labour voters who feel utterly betrayed by the party for its broken promises after the 2011 general election.
Renua simply seams to be a lifeboat by desperate right wing independents and Fine Gael dissidents to keep their seats.
PBP is the personality cult of Richard Boyd Barrett and as such is irrelevant.
The chief rivals for the leadership of the Irish Left Paul Murphy and Claire Daly have potential to carve themselves a party out of the alphabet soup of independents but the Irish Left is still a case of too many chiefs and not enough injuns.

The key to the tectonic plates in the Dáil is the leadership of Sinn Féin.
The sex abuse scandals, the Disappeared, the criminality of the IRA in the border regions, his continued denials about membership and his leadership of the Provos, his ambiguous attitude to the bombings, shooting, kneecappings etc during the Trouble will dog Adams as long as he is leader of Sinn Féin. These issues have the potential scupper Sinn Féin's chances of picking up transfers, of other parties form a coalition with the party and could bring down a coalition government including Sinn Féin if more muck is raked up.

Sinn Féin has been led by Adams for decades and it is obvious that when he goes as he must go some time in the near or distant future, McDonald or Doherty or someone else is going to seek the leadership of the party. This has the potential to split the movement in smithereens. McDonald is ex-FF and clearly would like to take the party in the direction of centre ground of Irish politics to take the place of Fianna Fáil. The new generation of upcoming Shinners want to delicately leave Adams behind but not in the process drop the various balls being juggled.

The armed struggle uncompromising republicans from the republican ghettos will inevitably be thrown under the bus for the sake of power. If the gunmen and bombers and hunger strikers haven't yet realised their sacrifice was for nothing or that they are an embarrassment they soon will. If and when Sinn Féin get into power the Mafia style operations on the border - fuel smuggling and cigarettes and other criminality - will be crushed ruthlessly as the Shinners do some spring cleaning. Adams, the Castro like leader, will be a very hard act to follow. If McDonald or Doherty or someone else emerges and proves to be nonentity the whole carefully constructed edifice of Shinner unity and loyalty would come crashing down.

Fine Gael is divided over going into government with Sinn Féin with Brian Hayes one of the most vocal opponents. There is also the question of coalition or a merger with Fianna Fáil. Shrewd Fianna Fáil types like Michael McGrath or Billy Kellegher who have leadership ambitions would use such a merger to launch a leadership coup to take over the leadership of a combined conservative party. Traditionalists like Eamon O'Cuiv would sooner merge with Sinn Féin than join with the hated Blueshirts. The obvious successor of Enda Kenny is Leo Varadkar who seems to be creating a Bertie style manner as he positions himself for Kenny's departure most likely after the next election.
Could Varadkar preside over a merge with Fianna Fáil or a loose political alliance against Sinn Féin?

Labour meanwhile is floundering. Joan Burton from the traditional wing of Labour has seen off the Stickie usurpers Gilmore and Rabbitte who took over the party after the old Democratic Left merged with Labour. But she waited too long, is reaching the end of her political career and ambitious types like Ó Riordain are waiting in the wings.