Seems to me that Nemo need to find a couple of forwards. For a while now, they've been relying almost completely on Kerrigan to create and Connolly to score, especially in the last year when they took extra measures to stop themselves getting hit on the counter. While this was wise, it does mean that you're also robbed of the traditional Nemo strength of technically excellent backs attacking from deep, so you become even more reliant on Kerrigan and Connolly.
Pa Campbell would have been a good addition in time, perhaps even as early as this year, but I presume the IRFU will insist that he doesn't play football. I'm not sure what their other options are for 2022.