Lord Kensington Rules for Skill Challenges

This is a houserule for skill challenges in 4e used by a podcast called "critical hit". They have gained a fair amount of popularity, and so we are going to try using them in 5e. Like all house rules, this is subject to tweaking/removal if it does not work out well.
The Lord Kensington Rules for Skill Challenges are:
ROLL INITIATIVE!

• Accrue a number of successes equal to party members +3 to win
• Accrue 3 failures to lose
• You can’t roll the same skill twice in a row.
• You can’t roll the same skill someone immediately preceding you in initiative just rolled.
• Creative uses of skills are encouraged, but not uses that horn in on other skills.
• Final decision as to whether a description of a skill works (and whether a roll can be attempted at all) lies with the GM.
• Consuming spell slots grants advantage to a check, but still require a skill check be made