I considered asking for those too but....
I doubt riot would add an upgrade to
since half of its stats would come from the passive already. If they did add an upgrade to it , would probably be 20 armor + 20 mr, if we are lucky they will also consider the passive and give us another 20+20 on the base armor / mr.
on the otherhand they will probably give us a ton of base health regen and only 200 hp while sunfire gives nearly that much + extra armor.....
Infact, im sure they wouldn't do much with
wont add anymore cdr to it(too much to begin with), probably 40 armor, lots of mana so now I don't think they should add an upgrade to that either for the sake of it...
Atleast with items that give hp AND resistance, riot has been kind to buff both a very considerable amount

Sunfire gets 200 health 30 armor from upgrading
Abyssal mask gets 200 health 35 mr from upgrading.
That's getting close to doubling the stats on abyssal mask which is a pretty strong item already, not to mention it has an offensive passive.....lets not forget that mr is hard to get a lot of on a single item, the only items in the game that give 60+ mr are
and
when around 3 enemies.
If we are counting combat stats alone (No mana, not a lot of weight on base health regen or cdr since we should already be capping)
They would need to give 400 hp+ to
since it gives purely hp and no armor / mr.
And 50+ armor to
since it gives 100 armor and no hp or mr.
And 30-40 armor + mr to
since it can give 80 of both already.
can give a realistically powerful upgrade when compared to
since they share similar stats, if riot has been kind to sunfire cape, they are very likely to be just as kind to omen.
But lets hope for the best.