I do not use Cubase, so i cannot comment to this.
I even gone so far that i almost only use DAW presets for everything now since i anyway use mainly layers of instruments and FX. I cannot imagine a much more worse preset browser as clicking trough Reaktor
I even wonder why these days we still see not more DAW specific preset packs instead of synth preset banks.
But the main downside for me still is the cpu usage. While Reaktor offer some amazing things and so i cannot go far on my machine with it (which is of course my problem only maybe).
In general i also use now mainly stock synths from the DAW which can emulate even 90% of the Minimoog sounds as good as all these emulations while i can run 100+ instances where i max out at 6-8 with other options. For specific sounds these emulations are great but in most cases it is a waste of cpu cycles.
Just some time ago someone proved we wrong and he recreated some Minimoog sound with a stock synth and in some cases i find it even sound better.
Brings me back to Massive X since i hope this will be an unusual synth i cannot emulate easy with my stock tools.