Indefinite suspension of 48623, a proposal that was already passed by the community, is not in the context of this proposal or discussion.
Yes, the co-sponsors of this proposal are aware that work on 48623 has been ongoing, as mentioned here Compounding Maturity - NNS implementation update. This proposal simply aims to ensure that 55651 & 38985 are prioritized, implemented, and delivered before continued work on 48623.
While your points are 100% valid discussion points, they should be brought up in a separate post/thread, as this proposal is more focused towards ensuring that broadly supported community passed proposals receive the same urgency and priority as those driven by the top-level executives at DFINITY.