Nords have the same build as Elektrons - tanks. Worst case is that you will need to replace some buttons which doesn’t cost much. I wouldn’t consider the sound of the A1 dated at all.
Discovery Pro is a NL2 emulation based of the Motorola chip they used. Free but beta (buggy) version by The Usual Suspects - Nodal Red 2x on their discord.
Nerd Synth A2x review
In conclusion, no emulation comes close to the A1 nor has the same spec.
Nord Wave 2 doesn’t have all of A1 waveforms but offer other features.