The 10 team league was bad the last time it was tried and it's bad now. The rationale for going back to the structure was for 10 fully pro teams - well that worked out well didn't it?
16 teams would be better, once there was a structure below for relegation promotion. Part of the pressure that leads teams to overspend is because of the fear of relegation, which is hieghtened with a 10 team league - it might be more competitive, but that brings it's own problems.
The idea I've always thought might work with the wider general mentality of only caring about a few knock out games would be a north-south, or east-west, split of the entire league. Home and away, with one round of interdivisional games (every club plays every other). Title decided on play offs and a grand final for the title. It would give clubs a chance to consolidate, give clubs the chance of big gates throughout the season with which to build. You could have secondary play off's a trophy and shield to keep the competitive down the league - say bottom three of each division have no chance of making grand final day. Have 3 games on Grand Final Day and you'd have pretty much full Lansdowne Road.
Obviously it's only an idea, I've only given it as much thought as the FAI/ League give any of their changes. But back of an fag packet was good enough for a 10 team league, summer football etc....