There is nothing that makes an uncontainable SCP object salvageable.
As an author, you are expected to craft containment policy with the in character resources of a global organization whose budget, reach, capabilities, and capacity to exert situational control are all dependent entirely on your whim as an author. With the sole exception of using other SCP objects as a containment measure, there is literally nothing you are not allowed to do.
If given unlimited theoretical resources you cannot think of a way to contain your SCP object, you are either lazy or not creative enough to do the object justice. End of story.
On a similar note, "pacification" is not containment. To contain an object is to exercise control over it. If the Foundation gives in to the demands of an SCP object, it secedes that control to the object. In short, if an SCP object is allowed to have whatever it wants whenever it wants, it is not contained. If it is not contained, see the first sentence of this post.
On yet another related note, if an SCP object is able to "bend reality to its will", it cannot be contained. Refer again to the first sentence of this post.
Now. Those last two are their own separate issues.
If an SCP object has a "random mishmash of powers", it is a poorly written SCP object. You see, when writing fiction, it is important that the author maintain a cohesive sense of narrative and cause and effect within the piece. Not just in SCP articles, but also in any other writing excersize, if the phrase "random mishmash" can be applied with honesty to an aspect of the work, that work is by definition bad. We don't like bad writing here. If you feel the need to splurt "random mishmashes of powers" into someone else's fictional metaverse, I suggest you open google in a new tab, search for "fanfiction.net" in it, and then click the small X in the top right corner of this one.
This one makes me sad. It really does. Crosslinking can add a vast amount of realism to a fiction wiki. By allowing readers to click from one SCP document to another within the fictional framework without resorting to out of character index pages, authors can subtly enhance the readers' sense that they are in fact reading actual documents about real things. Crosslinking is an excellent way to remove the fourth wall breaking "hey, this is a fiction community" reminder of out of character page listings.
This wiki is edited by hundreds of people on a nonscheduled open submission basis, and relies on community opinion to decide which pages remain and which pages are removed. It's been conservatively estimated that for every SCP article on the main list alone at least three articles have been deleted. This turnover is excellent, because it means that good writing ultimately outlasts poor quality submissions in the long run. Thing is, page deletions are not automated.
Article deletions are handled by open staff polls and then deleted by hand on a case by case basis. It's the biggest responsibility staff members have on this wiki, and takes up most of our staff hat time. When an article is a standalone page, it can be simply deleted with a relative minimum of hassle, and we can dust our hands and happily saunter off on our merry way. When an article is extensively crosslinked, on the other hand…
Many of you remember the debacle surrounding the [REDACTED]s dismissal from the site. He demanded that upon the end of his relationship with the wiki the entirety of his works and all references to them be removed from it, citing personal discomfort and copyright worries. It is the policy of this wiki that when a page's creator requests that page's deletion their wish is honored, with no exceptions. So, the deletions began.
[REDACTED] had created an extensive personal canon based on a shared sequence of events tying together numerous articles and Foundation tales, each with its own supplementary materials. The main page deletions alone took days, and a team of staff members had to dedicate nearly a week to hunt down cross links and references. Occasionally, these references still turn up in long forgotten log pages and the like. Removing cross references to deleted material is a bitch, oh my brothers. We hate to do it.
So, staff asks that you not cross link articles. The occasional exception is made for particularly good writing that is expected to become more or less permanent, but as a general "rule", you're not supposed to do it. Personally, I advise authors considering cross linking to ask a member of the admin team for permission first.
Yes, I'm absolutely certain you can point out articles that break a couple of these rules and make it work. This changes nothing. Yes, some articles can pull it off. No, yours probably can't. If you find yourself as an author encountering any of these issues in your writing except the first or fourth, ask a staff member for help. If they say don't do it, don't do it.
If you find yourself encountering the first or fourth, close your browser, take a cold shower, stop reading fanfiction, turn off your anime, and strongly consider permanently leaving this wiki. I'm genuinely not kidding.