Multiverse Feedback: Virtual Booster

Purple rarity    M  Suggestion I'd like to be able to make cards with purple expansion symbols.	Frequent Heroku errors?    U    I've been seeing a few Heroku errors on the page lately. It usually doesn't last, just half an hour or so, but it's a little odd. Wanted to ask about it in case it's slipped under the radar so far.	Different card frames    U  Enhancement Stuff like the old frame, PCH planeshifted, and FUT futureshifted.	M15 flips are broken    U  Bug M15 flip cards render improperly, with the rare stamp jammed in the middle of the unflipped rules text, and the flipped P/T box trying to jump off the line.	My Cards    C  Enhancement It'd be nice to have a global link to My Cards (i.e. ones the current user has created), or My Recent Cards, or something.
Multiple boosters    C    Actually, what I'd really like is to get the approximate numbers for contact sheets – one of each of the rares/mythics, random selection of foils and whatever rounds it out for common/uncommon. You can get it by hitting 'booster' a lot of times, but being able to get it in one go would be nice.	Warn if about to lose unposted comment    C  Enhancement If you've typed a bunch of text in a comment box, but then click "Edit card" or some other link, the comment isn't posted. I could make Multiverse warn you about the unposted comment, like Stack Exchange sites do.	Inconsistent text size in mockups    C  Oddness On many cards, the text size in the mockup at top-left is slightly smaller than the text size for the same card in the hover tooltip on the "User created Cardname" links.	Application Errors    C  Error Frequently getting these Application Errors. On some days it's really bad. Loading a cardset or page requires many tries. If working on a new card, it could mislead you to resubmit several times, thus creating multiple copies of the same card. I assume this server runs on ASP.NET because I only ever see these errors on ASP served pages. Quite often, actually, not just this site.	Same card codes    C    An option for cards fighting for the same slot. Not sure how the skeleton would/should display it, though. Same card code may go against how you already coded things, but an alternative could be something like "CL05b", idk.
Watermarks on cards    C  Feature Let people specify a large image to sit behind the card text, to be a watermark.	Sort/show by Rarity buttons in Spoiler    C    It's probably been brought up and considered before, but I'd love the ability to show/hide cards of a given rarity in the Visual Spoiler, if not all relevant tabs.	Innistrad Skeleton    C    In the Generate Skeleton Examples, It would be nice to have Innistrad appear as one of the examples. It's one of the few modern stand-alone sets that doesn't have something funky going on with the numbers.	Cards remaining is skeleton after removal    C    I moved two cards from my set Convergence to Infinite Potential Well. For some reason, they're still showing up on the skeleton of Convergence.	More features for advanced search    B    Can you please give more features for searching cards on the advanced search page? I'd like features that allow us to search by mana cost and colors of the cards. These features haven't been added yet, but it would definitely help a lot if we can search according to mana cost, converted mana cost and colors because I'd like to see all the WUBRG cards in this website, for example.

Purple rarity (mythic)
Frequent Heroku errors? (uncommon)
Different card frames (uncommon)
M15 flips are broken (uncommon)
My Cards (common)
Multiple boosters (common)
Warn if about to lose unposted comment (common)
Inconsistent text size in mockups (common)
Application Errors (common)
Same card codes (common)
Watermarks on cards (common)
Sort/show by Rarity buttons in Spoiler (common)
Innistrad Skeleton (common)
Cards remaining is skeleton after removal (common)
More features for advanced search (basic)