I can actually tend to agree (to some certain aspects) of the OP's idea, as Summer Slam '90 was actually my VERY FIRST intro/ppv build up/cherry popper into becoming a wrestling fan; Stayed with the channel as a younger lad after an episode of He-Man had concluded totally enticed by upcoming "WWF action on All American Wrestling with an update on the attack of Hulk Hogan on the Brother Love Show", Lol.
Now, while it (the forthcoming SS '90 PPV that is) obviously caught & kept my attention (really just wrestling in general was a perfect fit/budding interest to me) enough to keep tuning in, it was more the superstars as well as shockingly realizing that the "famous" Hulk Hogan who'd I'd always heard of wasn't world champ & that instead this chiseled cool looking Ultimate Warrior guy was, and would be in a cage with the Ravishing one defending his title... And while I later got to watch it on vhs and enjoyed it, the PPV honestly really didn't hold up to me as much as it had when I was in the midst of my more 'innocent years'... And I viewed it multiple times in my youth amongst the many other rentals of WWF (some Wcw/Nwa) tapes playing "catch-up" (and later on legitimately purchased -or stolen from the store- in building my collection of classic events) Lol. Though it was a quality event and not by any means "bad" or disappointing, I thought Summer Slam '89 was most definitely superior on all fronts (except for the main event anyway) IMHO... Great quality opener w/ the Busters & Harts, an energetic six man w/ Tito & The Rockers vs Model & Rougeaus and the cool monster one with Andre & Towers vs the still unstoppable Demolition & Duggan, a BETTER Warrior/Rude affair with Piper getting involved, and still pretty new Mr Perfect totally humiliating the Rooster (in a match that 'perfectly' forecasted just where both mens WWF tenures were going), and some entertaining decent enough blow off filler w/ Dusty-Honky, Dibiase-Snuka, and Garvin embarrassing Valentine throughout his match with Herculies.
Here's what I'd hypothetically do with the Summer Slam 1990 card:
Warrior vs Rude **(the Perfect title/title idea is cool in concept no doubt, but as another poster said this should just stay as is given the history between the two and also the IC title and its status)
Hogan/Dusty vs. Earthquake/Dibiase (w/ Bossman and Bravo still in their respective corners) **(Go ahead, throw Hogan in another 'tag SS main-event' scenario, as the 'Quake one on one didn't end cleanly anyway, no big loss. On a side note, I am very glad that things worked out here as to where Tugboat was excluded and Bossman was given this role instead, very cool & intriguing for the time indeed with Bossman just coming off that heel run)
Savage vs. Piper *(I like this, and btw it was done on Wrestlefest '90 I believe- and Piper could've went right back to the booth after as is often >over< done now, as they could have done Macho getting his win back to feud conclude w/ Dusty >just as transpired< on a preceding SNME match which Dibiase got involved distracting Rhodes just as they did)
Demolition vs. Harts *(Keep this, while LOD would've been good, timing didn't anyway, and LOD/Demos should've been done right -as it never Really was- at the Rumble or WM 7 since they didn't give LOD the titles there which will always be a mystery to me, besides who cares about the Nasty Boys?!)
Jake vs. Bad News (w/ Bossman as ref)
LOD vs. Orient Express
Warlord vs. Volkoff *(C'mon, give Tito a break for once, Lol!)
Mr. Perfect vs. Tornado *(As always Mr. P didn't disappoint- that 'tornado punch' sell was great, Lol. Though I like personally enjoyed at WM 7 when Bossman slaps him in the face and the man does a 360 in sell/response, just brilliant!)
Anyway, that would be my "tweaked/improved" SS '90 PPV card, thanks for reading.