When adding a new climb, it is currently possible to give slash grades, such as 5.10c/d or V4-5. There are a number of cases where it would be helpful to permit a wider range, such as 5.10-5.11 or V3-V5. Some examples:
There may exist easier beta than what was used on the first ascent
The climb may be outside the preferred style of the submitter, such as a compression boulderer submitting an offwidth crack
The first ascensionist has an unusual body type that may be highly favorable to this particular climb
The route is an open project
If such a system were implemented, there are two natural questions that would need to be answered:
How many grade votes would be required to remove the range and assign a single grade?
When calculating the average of all grade votes, what effect should the original grade range have (if any)? For example, if a climb is submitted as V3-V5, and the consensus grade is V3+, should the original grade range be counted as a vote for V4, or just ignored altogether?