Yet as often happens in situations like these, having a plethora of talent available to select from can often itself prove unsettling for a team.
Needing to choose between 2 different year-on-year League top scorers and Irish international strikers ahead of each game is a position that many managers would envy being in, yet the newly assembled collection of individuals at the club has failed to really click as a team domestically.
Rather than challenging for their third consecutive championship, the club therefore finds itself in the unfamiliar surroundings of 3rd place in the league - a full 14 points behind pace-setters Cork and 10 behind 2nd place Derry City (though with a game in-hand on both).
To give that situation some context, it's 6 years since Shelbourne last finished outside the Top 2 in Ireland. They have also been clocking up a number of disappointing results this year - registering wins in only half their games to date.
The latest of these disappointments came in their last league match 10 days ago when they let slip a 2-0 11th minute lead over a relegation-threatened team, conceding two late goals to end with an unlikely point.
That game saw the return debut to Eircom League football of Curtis Fleming, who manager Pat Fenlon hopes will go someway towards reinforcing his team's surprisingly shaky defence.
It is therefore clear that Shels will require a significant improvement on their recent domestic form if they are to threaten Steaua this evening and write another glorious chapter to their recent European adventures.
They go into the game as underdogs, with Steaua the bookies firm favourites to progress. But as last week's first-leg showed, the tie is not totally beyond their grasp.
Much will depend upon who gets the first goal. Shels will most likely opt for a defensive game-plan - happy to go in at half-time with a 0-0 draw, and looking to sneak an away goal on-the-break as the clock ticks and pressure builds on the home side.
To do this, however, their assembled Gaelacticos will need to finally gel into the team of substance that they are, play the game of their season, and hope for an off day for their Romanian counterparts. Maybe, just maybe, somewhere in Limerick on Thursday evening a 46 year old mother of six will make a last minute decision to switch on her TV to watch an Irish team play Champions League football.
If Lady Luck were to play her part in that event, there may well prove to be one last European success for the Irish before the week is out.
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