If you want a particular colour scheme/number name etc for any of the existing rtr models theres plenty of decal packs available from Ssm & railtec, so either do it yourself or use the services of the respray lads. As for the 201's, unless Pm does a ltd run of the new liveries Belmond/new enterprise i can t see me adding any more to my lot although i wouldn t mind another run of the original orange livery. As for the 141/181's i can see a market for a limited run of one in each livery. The a/c class from silverfox doesn t pass muster unless a LOT of work is put into it and as an add to that the same suppliers sulzer is quite poor.
Era specific modelling i think goes back to childhood/young adult nostalga. I like the late 1990's to 2008ish, this era has plenty of modelable train rakes 4 wheel cement trains bubbles etc, beet 4 wheel, 4 wheel spoil,beet,ballast among others. Ammonias & ferts ran till the mid part of the era, along with grain, guiness,oil. Plenty of short gm hauled cravens with gsv's where in operation during this era too. I also like the modern post 2008, grey & black+silver 071's, the newer enterprise and intercity 201's, construction trains for the midleton and western corridor, timbers & liners out of waterford. Theres plenty there today but not to the same levels of variety as the past eras.