Yes and no.
I'd be all for the graphical updates, but as there are spells (possibly also monsters?) that do not reappear in Deadfire, they'd have to redo them specifically for the port—quite a bit of work for a re-release, so I'm not holding my breath.
I would not be as enthusiastic about mechanical changes. The first game was balanced around no multiclassing (which by the way would render the multiclass talents utterly redundant), no subclasses, per-rest spells, six skills, and DR mechanics. Changing all that to Deadfire's rules would require extensive, painstaking rebalancing of every in-game area and encounter, which I doubt would happen (much like it didn't happen in BG:EE; I can excuse Tutu/BGT as they were developed for free by modders who contributed their free time to the project.)