Depending on the outcome of the current talks about work coverage, if any changes made are significantly detrimental to Bidline, it is likely that shorthaul commands will become more junior as the senior trash choose to remain on longhaul and wait for a seat swap.
A big gamble for those joining now but it is entirely feasible that you could find yourselves senior enough for a shorthaul command but too junior for longhaul FO. Not dissimilar to the US system.
Suffice to say that without Bidline, your lifestyle control will be reduced significantly, even though it may be "industry leading" at the moment. Career progression will be slow. You'd hope the pay and pension would make up for that but you can achieve better elsewhere.
Come in by all means and you will be welcomed. Just come in with your eyes properly open.