Liz, while I haven't been to the basilica while the restoration work has been underway, I can promise you that the sheer size and architecture of the place is worth the visit. I'm sorry you won't be able to see Pieta but if it helps, the sculpture was some distance behind the protective glass so you wouldn't have gotten a close-up look at it, Quite honestly, the Bernini sculptures in Galleria Borghese and some other locations around Rome made a bigger impression.
If you don't hear from enough recent visitors on this forum, browse the reviews (since March or so) on Trip Advisor? While those won't address the most recent issue with Pieta, I'm not seeing any complaints about the baldacchino works spoiling the visit. As one visitor wrote, "Even with some maintenance work going on and scaffolding in place this did not detract from our experience."
You can see what the covering on the baldacchino looks like here:
https://x.com/CatholicNewsSvc/status/1773264301232468025
https://catholiccourier.com/articles/let-tears-of-repentance-flow-pope-tells-priests-at-chrism-mass/. (first photo)
It looks like you'll be able to walk back of it to see Bernini's Altar of the Chair of St Peter.
In addition, here is a detailed map of the many, many other altars, sculptures and monuments within the church. It may help alleve at least some of your understandable disappointment with an example of everything else there is to see?
https://stpetersbasilica.info/floorplan.htm
(Don't rely of this website for other visiting details; use St. Peter's own site.)
This is the basilica's official website:
https://www.basilicasanpietro.va/en.html